Row_ID int64 1 30.2M | Topic stringclasses 3
values | Subtopic stringclasses 4
values | Question stringclasses 13
values | Answer_1 stringclasses 11
values | Explanation_1 stringclasses 12
values | Answer_2 stringclasses 11
values | Explanation_2 stringclasses 11
values | Answer_3 stringclasses 0
values | Explanation_3 stringclasses 0
values | Difficulty stringclasses 2
values |
|---|---|---|---|---|---|---|---|---|---|---|
501 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
502 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
503 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
504 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
505 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
506 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
507 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
508 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
509 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
510 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
511 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
512 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
513 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
514 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
515 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
516 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
517 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
518 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
519 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
520 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
521 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
522 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
523 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
524 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
525 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
526 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
527 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
528 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
529 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
530 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
531 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
532 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
533 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
534 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
535 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
536 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
537 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
538 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
539 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
540 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
541 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
542 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
543 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
544 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
545 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
546 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
547 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
548 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
549 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
550 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
551 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
552 | Organic Chemistry | Alkenes | HBr+1-butene product? | 2-bromobutane | HBr adds; yields 2-bromobutane. | sec-butyl bromide | Same: sec-butyl bromide. | null | null | Hard |
553 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
554 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
555 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
556 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
557 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
558 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
559 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
560 | Organic Chemistry | Alkenes | HCl+1-butene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
561 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
562 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
563 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
564 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
565 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
566 | Organic Chemistry | Alkenes | HBr+1-methylcyclohexene product? | 1-bromo-1-methylcyclohexane | HBr adds; yields 1-bromo-1-methylcyclohexane. | 1-methyl-1-bromocyclohexane | Same: 1-methyl-1-bromocyclohexane. | null | null | Hard |
567 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
568 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
569 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
570 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
571 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
572 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
573 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
574 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
575 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
576 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
577 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
578 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
579 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
580 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
581 | Organic Chemistry | Alkenes | HCl+1-methylcyclohexene product? | unknown | HCl adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
582 | Organic Chemistry | Alkenes | HBr+2-methylpropene product? | unknown | HBr adds; yields unknown. | unknown | Same: unknown. | null | null | Hard |
583 | Inorganic Chemistry | Oxidation States | Fe ox.state in [Fe(CN)6]4-? | +2 | [Fe(CN)6]4-: Fe=+2. | Fe(II) | +2=II. | null | null | Expert |
584 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
585 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
586 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
587 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
588 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
589 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
590 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
591 | Physical Chemistry | Kinetics | t1/2,k=0.05s^-1? | 13.9s | t1/2=0.693/0.05=13.9s. | ~14s | t1/2≈0.7/0.05=14s. | null | null | Hard |
592 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
593 | Physical Chemistry | Kinetics | t1/2,k=0.1s^-1? | 6.9s | t1/2=0.693/0.1=6.9s. | ~7s | t1/2≈0.7/0.1=7s. | null | null | Hard |
594 | Physical Chemistry | Kinetics | t1/2,k=0.01s^-1? | 69.3s | t1/2=0.693/0.01=69.3s. | ~70s | t1/2≈0.7/0.01=70s. | null | null | Hard |
595 | Inorganic Chemistry | Oxidation States | Co ox.state in [Co(NH3)6]3+? | +3 | [Co(NH3)6]3+: Co=+3. | Co(III) | +3=III. | null | null | Expert |
596 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
597 | Physical Chemistry | Kinetics | t1/2,k=0.02s^-1? | 34.6s | t1/2=0.693/0.02=34.6s. | ~35s | t1/2≈0.7/0.02=35s. | null | null | Hard |
598 | Organic Chemistry | Alkenes | HCl+2-methylpropene product? | 2-chloro-2-methylpropane | HCl adds; yields 2-chloro-2-methylpropane. | tert-butyl chloride | Same: tert-butyl chloride. | null | null | Hard |
599 | Organic Chemistry | Alkenes | HBr+1-butene product? | 2-bromobutane | HBr adds; yields 2-bromobutane. | sec-butyl bromide | Same: sec-butyl bromide. | null | null | Hard |
600 | Organic Chemistry | Nomenclature | Name CH3CH(OH)CH2CHO? | 3-hydroxybutanal | CH3CH(OH)CH2CHO: 3-hydroxybutanal. | beta-hydroxybutyraldehyde | 3-hydroxybutanal=beta-hydroxybutyraldehyde. | null | null | Hard |
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