id stringlengths 24 24 | title stringclasses 442
values | context stringlengths 151 3.71k | question stringlengths 1 25.7k | answers dict |
|---|---|---|---|---|
570962e2ed30961900e84050 | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | What year was the largest find of copper discovered? | {
"text": [
"1857"
],
"answer_start": [
406
]
} |
570962e2ed30961900e84051 | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | Where was the largest mass of copper found? | {
"text": [
"Michigan, US"
],
"answer_start": [
440
]
} |
570962e2ed30961900e84052 | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | How big is the largest copper crystal that has been found? | {
"text": [
"4.4×3.2×3.2 cm"
],
"answer_start": [
538
]
} |
5a8353c7e60761001a2eb58d | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | What is the concentration of copper in the earths atmosphere? | {
"text": [],
"answer_start": []
} |
5a8353c7e60761001a2eb58e | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | How large was the smallest find of copper? | {
"text": [],
"answer_start": []
} |
5a8353c7e60761001a2eb58f | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | What year was the smallest find of copper discovered? | {
"text": [],
"answer_start": []
} |
5a8353c7e60761001a2eb590 | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | Where was the smallest mass of copper found? | {
"text": [],
"answer_start": []
} |
5a8353c7e60761001a2eb591 | Copper | Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite... | How big is the largest alien crystal that has been found? | {
"text": [],
"answer_start": []
} |
57096523ed30961900e8408c | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What was copper called in Greece? | {
"text": [
"chalkos"
],
"answer_start": [
40
]
} |
57096523ed30961900e8408d | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | In what area was copper first mined? | {
"text": [
"Cyprus"
],
"answer_start": [
250
]
} |
57096523ed30961900e8408e | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What is the Greek goddess that symbolizes copper? | {
"text": [
"Aphrodite"
],
"answer_start": [
350
]
} |
57096523ed30961900e8408f | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What is the Roman goddess that symbolizes copper? | {
"text": [
"Venus"
],
"answer_start": [
364
]
} |
57096523ed30961900e84090 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What property does copper have that links it to Aphrodite and Venus? | {
"text": [
"lustrous beauty"
],
"answer_start": [
430
]
} |
5a836a91e60761001a2eb681 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What was copper forbidden to be called in Greece? | {
"text": [],
"answer_start": []
} |
5a836a91e60761001a2eb682 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What area was the only copper mine? | {
"text": [],
"answer_start": []
} |
5a836a91e60761001a2eb683 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What is the Egyptian goddess that symbolizes copper? | {
"text": [],
"answer_start": []
} |
5a836a91e60761001a2eb684 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What is the German goddess that symbolizes copper? | {
"text": [],
"answer_start": []
} |
5a836a91e60761001a2eb685 | Copper | In Greece, copper was known by the name chalkos (χαλκός). It was an important resource for the Romans, Greeks and other ancient peoples. In Roman times, it was known as aes Cyprium, aes being the generic Latin term for copper alloys and Cyprium from Cyprus, where much copper was mined. The phrase was simplified to cupr... | What property does silver have that links it to Aphrodite and Venus? | {
"text": [],
"answer_start": []
} |
570967d5200fba1400367f63 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What are compounds that have a carbon-copper bond called? | {
"text": [
"organocopper compounds"
],
"answer_start": [
57
]
} |
570967d5200fba1400367f64 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What does organocopper compounds reactions toward oxygen form? | {
"text": [
"copper(I) oxide"
],
"answer_start": [
127
]
} |
570967d5200fba1400367f65 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What is produced when copper compounds are treated with organolithium reagents? | {
"text": [
"Gilman reagent"
],
"answer_start": [
351
]
} |
570967d5200fba1400367f66 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | Coupling products can be made by substituting Gilman reagent with what? | {
"text": [
"alkyl halides"
],
"answer_start": [
403
]
} |
570967d5200fba1400367f67 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | Which form of copper is shock sensitive? | {
"text": [
"Copper(I) acetylide"
],
"answer_start": [
507
]
} |
5a836556e60761001a2eb661 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What are compounds that have a black-copper bond called? | {
"text": [],
"answer_start": []
} |
5a836556e60761001a2eb662 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What does organocopper compounds reactions toward water form? | {
"text": [],
"answer_start": []
} |
5a836556e60761001a2eb663 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | What is destroyed when copper compounds are treated with organolithium reagents? | {
"text": [],
"answer_start": []
} |
5a836556e60761001a2eb664 | Copper | Compounds that contain a carbon-copper bond are known as organocopper compounds. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. They are synthesized by treating copper(I) compounds with Grignard reagents, terminal alkynes or organolithium reagents; in particular, the last... | Which form of copper is time sensitive? | {
"text": [],
"answer_start": []
} |
57096959200fba1400367f89 | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | Who used copper to produce art? | {
"text": [
"Renaissance sculptors"
],
"answer_start": [
71
]
} |
57096959200fba1400367f8a | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What is the photographic technology that uses copper called? | {
"text": [
"daguerreotype"
],
"answer_start": [
134
]
} |
57096959200fba1400367f8b | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What famous NY city landmark is made from copper? | {
"text": [
"Statue of Liberty"
],
"answer_start": [
157
]
} |
57096959200fba1400367f8c | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What famous explorers ships was one of the first to have it's hulls made of copper? | {
"text": [
"Christopher Columbus"
],
"answer_start": [
258
]
} |
57096959200fba1400367f8d | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | When did The Norddeutsche Affinerie electroplating plant first begin production? | {
"text": [
"1830"
],
"answer_start": [
505
]
} |
5a836c85e60761001a2eb6a7 | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | Who used copper to produce garbage? | {
"text": [],
"answer_start": []
} |
5a836c85e60761001a2eb6a8 | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What is the magical technology that uses copper called? | {
"text": [],
"answer_start": []
} |
5a836c85e60761001a2eb6a9 | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What famous Arizona city landmark is made from copper? | {
"text": [],
"answer_start": []
} |
5a836c85e60761001a2eb6aa | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | What unknown explorers ships was one of the first to have it's hulls made of copper? | {
"text": [],
"answer_start": []
} |
5a836c85e60761001a2eb6ab | Copper | The uses of copper in art were not limited to currency: it was used by Renaissance sculptors, in photographic technology known as the daguerreotype, and the Statue of Liberty. Copper plating and copper sheathing for ships' hulls was widespread; the ships of Christopher Columbus were among the earliest to have this feat... | When did The Norddeutsche Affinerie nuclear plant first begin production? | {
"text": [],
"answer_start": []
} |
57096ba1200fba1400367fb1 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What property of copper increases the efficiency of electrical motors? | {
"text": [
"conductivity"
],
"answer_start": [
17
]
} |
57096ba1200fba1400367fb2 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What percentage of electrical consumption does motor systems use globally? | {
"text": [
"43%-46%"
],
"answer_start": [
173
]
} |
57096ba1200fba1400367fb3 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What percentage of electrical consumption does motor systems use in industry? | {
"text": [
"69%"
],
"answer_start": [
223
]
} |
57096ba1200fba1400367fb4 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What does the acronym NEMA stand for? | {
"text": [
"National Electrical Manufacturers Association"
],
"answer_start": [
564
]
} |
57096ba1200fba1400367fb5 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | By using copper motor rotor technology it is allowing industry to exceed what standards? | {
"text": [
"efficiency standards"
],
"answer_start": [
625
]
} |
5a836de2e60761001a2eb6c5 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What property of copper ruins the efficiency of electrical motors? | {
"text": [],
"answer_start": []
} |
5a836de2e60761001a2eb6c6 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What percentage of water consumption does motor systems use globally? | {
"text": [],
"answer_start": []
} |
5a836de2e60761001a2eb6c7 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What percentage of electrical consumption does motor systems use in secrecy? | {
"text": [],
"answer_start": []
} |
5a836de2e60761001a2eb6c8 | Copper | Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coi... | What does the acronym NEMA stand against? | {
"text": [],
"answer_start": []
} |
57096cd6ed30961900e840e8 | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | Name a compond that can mobilize sold copper? | {
"text": [
"Chromobacterium violaceum"
],
"answer_start": [
0
]
} |
57096cd6ed30961900e840e9 | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungi can grow in copper metalliferous soils? | {
"text": [
"ericoid mycorrhizal fungi"
],
"answer_start": [
113
]
} |
57096cd6ed30961900e840ea | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus protects pine trees from copper toxicity? | {
"text": [
"Suillus luteus"
],
"answer_start": [
251
]
} |
57096cd6ed30961900e840eb | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus grows from gold mining solution? | {
"text": [
"Aspergillus niger"
],
"answer_start": [
337
]
} |
57096cd6ed30961900e840ec | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus helps to soften heavy metal sulfides? | {
"text": [
"fungus Aspergillus"
],
"answer_start": [
330
]
} |
5a8370d7e60761001a2eb707 | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What is the only compound that can mobilize solid copper? | {
"text": [],
"answer_start": []
} |
5a8370d7e60761001a2eb708 | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungi can speak in copper metalliferous soils? | {
"text": [],
"answer_start": []
} |
5a8370d7e60761001a2eb709 | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus makes pine trees vulnerable to copper toxicity? | {
"text": [],
"answer_start": []
} |
5a8370d7e60761001a2eb70a | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus grows from diamond mining solution? | {
"text": [],
"answer_start": []
} |
5a8370d7e60761001a2eb70b | Copper | Chromobacterium violaceum and Pseudomonas fluorescens can both mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi associated with Calluna, Erica and Vaccinium can grow in copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus protects young pine trees from copper toxicity. A samp... | What fungus helps to toxify heavy metal sulfides? | {
"text": [],
"answer_start": []
} |
57096ee9ed30961900e8410c | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What is an intrinsic property of copper-alloy touch surfaces? | {
"text": [
"antimicrobial"
],
"answer_start": [
509
]
} |
57096ee9ed30961900e8410d | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | 355 copper alloys have been proven to kill what percentage of bacteria? | {
"text": [
"99.9%"
],
"answer_start": [
315
]
} |
57096ee9ed30961900e8410e | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What does the acronym EPA stand for? | {
"text": [
"Environmental Protection Agency"
],
"answer_start": [
413
]
} |
57096ee9ed30961900e8410f | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | How many copper alloys has the EPA approved as antimicrobial materials? | {
"text": [
"355"
],
"answer_start": [
267
]
} |
57096ee9ed30961900e84110 | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What disease do hospitals hope to prevent by installing copper doornobs? | {
"text": [
"Legionnaires' disease"
],
"answer_start": [
1166
]
} |
5a836fe6e60761001a2eb6e9 | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What is an intrinsic property of gold-alloy touch surfaces? | {
"text": [],
"answer_start": []
} |
5a836fe6e60761001a2eb6ea | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What does the acronym EPA oppose? | {
"text": [],
"answer_start": []
} |
5a836fe6e60761001a2eb6eb | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | How many copper alloys has the EPA banned as antimicrobial materials? | {
"text": [],
"answer_start": []
} |
5a836fe6e60761001a2eb6ec | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What disease do hospitals hope to prevent by installing golden doorknobs? | {
"text": [],
"answer_start": []
} |
5a836fe6e60761001a2eb6ed | Copper | Copper-alloy touch surfaces have natural intrinsic properties to destroy a wide range of microorganisms (e.g., E. coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), Staphylococcus, Clostridium difficile, influenza A virus, adenovirus, and fungi). Some 355 copper alloys were proven to kill more than 99.9%... | What has no ability to kill bacteria? | {
"text": [],
"answer_start": []
} |
570970afed30961900e8413c | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What are copper compounds in liquid form used for? | {
"text": [
"wood preservative"
],
"answer_start": [
46
]
} |
570970afed30961900e8413d | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What does copper wires along with zinc on roofs help to prevent? | {
"text": [
"moss"
],
"answer_start": [
279
]
} |
570970afed30961900e8413e | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What function does copper serve when used in textile fibers? | {
"text": [
"antimicrobial protective fabrics"
],
"answer_start": [
338
]
} |
570970afed30961900e8413f | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | How is copper used with nickel? | {
"text": [
"as a base"
],
"answer_start": [
469
]
} |
570970afed30961900e84140 | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What is used to treat structures for dry rot? | {
"text": [
"Copper compounds"
],
"answer_start": [
0
]
} |
5a83705de60761001a2eb6fd | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What are copper compounds in dragon form used for? | {
"text": [],
"answer_start": []
} |
5a83705de60761001a2eb6fe | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What does copper wires along with mud on roofs help to prevent? | {
"text": [],
"answer_start": []
} |
5a83705de60761001a2eb6ff | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What function does copper eliminate when used in textile fibers? | {
"text": [],
"answer_start": []
} |
5a83705de60761001a2eb700 | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | How is copper used with vodka? | {
"text": [],
"answer_start": []
} |
5a83705de60761001a2eb701 | Copper | Copper compounds in liquid form are used as a wood preservative, particularly in treating original portion of structures during restoration of damage due to dry rot. Together with zinc, copper wires may be placed over non-conductive roofing materials to discourage the growth of moss.[citation needed] Textile fibers use... | What is used to implode structures for dry rot? | {
"text": [],
"answer_start": []
} |
570971cb200fba1400368003 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How long has copper been in use? | {
"text": [
"at least 10,000 years"
],
"answer_start": [
23
]
} |
570971cb200fba1400368004 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | What percentage of copper has been extracted since 1900? | {
"text": [
"95%"
],
"answer_start": [
60
]
} |
570971cb200fba1400368005 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How much of mined cooper has been extracted in the last 24 years? | {
"text": [
"more than half"
],
"answer_start": [
136
]
} |
570971cb200fba1400368006 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How much copper is estimated to exsist on earth? | {
"text": [
"1014 tons"
],
"answer_start": [
276
]
} |
570971cb200fba1400368007 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | What is a major source of cooper in modern times? | {
"text": [
"Recycling"
],
"answer_start": [
667
]
} |
5a8357dde60761001a2eb5e3 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How long has copper been forbidden? | {
"text": [],
"answer_start": []
} |
5a8357dde60761001a2eb5e4 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | What percentage of copper has been stolen since 1900? | {
"text": [],
"answer_start": []
} |
5a8357dde60761001a2eb5e5 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How much of mined cooper has been extracted in the last 24 hours? | {
"text": [],
"answer_start": []
} |
5a8357dde60761001a2eb5e6 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | How much copper is estimated to be missing on earth? | {
"text": [],
"answer_start": []
} |
5a8357dde60761001a2eb5e7 | Copper | Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth... | What is a minor source of cooper in modern times? | {
"text": [],
"answer_start": []
} |
57097382ed30961900e8417e | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | What did Romans use as money in the 6th through 3rd centuriesBC? | {
"text": [
"copper lumps"
],
"answer_start": [
122
]
} |
57097382ed30961900e8417f | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | Who had his own coins produced out of brass? | {
"text": [
"Julius Caesar"
],
"answer_start": [
255
]
} |
57097382ed30961900e84180 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | During the 6th through 3rd centuries BC how much copper was mined in Rome? | {
"text": [
"15,000 t"
],
"answer_start": [
419
]
} |
57097382ed30961900e84181 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | Cctavianus Augustus Caesar had his coins made out of what alloys? | {
"text": [
"Cu-Pb-Sn alloys"
],
"answer_start": [
360
]
} |
57097382ed30961900e84182 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | What became more important than the copper value for Roman coins? | {
"text": [
"the shape and look"
],
"answer_start": [
199
]
} |
5a836b58e60761001a2eb695 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | What did aliens use as money in the 6th through 3rd centuries BC? | {
"text": [],
"answer_start": []
} |
5a836b58e60761001a2eb696 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | Who had his own trees produced out of brass? | {
"text": [],
"answer_start": []
} |
5a836b58e60761001a2eb697 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | How much copper was stolen in Rome during the 6th through 3rd centuries BC? | {
"text": [],
"answer_start": []
} |
5a836b58e60761001a2eb698 | Copper | The cultural role of copper has been important, particularly in currency. Romans in the 6th through 3rd centuries BC used copper lumps as money. At first, the copper itself was valued, but gradually the shape and look of the copper became more important. Julius Caesar had his own coins made from brass, while Octavianus... | What became less important than the copper value for Roman coins? | {
"text": [],
"answer_start": []
} |
570974d8200fba140036801f | Copper | The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper ... | What percentage of copper is used in electrical wires? | {
"text": [
"60%"
],
"answer_start": [
58
]
} |
570974d8200fba1400368020 | Copper | The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper ... | What percentage of copper is used in roofing and plumbing? | {
"text": [
"20%"
],
"answer_start": [
86
]
} |
570974d8200fba1400368021 | Copper | The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper ... | What percentage of copper is used in industrial machinery? | {
"text": [
"15%"
],
"answer_start": [
117
]
} |
570974d8200fba1400368022 | Copper | The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper ... | What property does combining copper with brass or bronze create? | {
"text": [
"hardness"
],
"answer_start": [
180
]
} |
570974d8200fba1400368023 | Copper | The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper ... | What is a metal that copper is combined with to create a greater hardness? | {
"text": [
"brass"
],
"answer_start": [
279
]
} |
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