problem stringlengths 14 4.09k | solution stringlengths 1 802k | task_type stringclasses 3
values | problem_tokens int64 5 895 |
|---|---|---|---|
The following is a multiple choice question (with answers).
===Question
Which of the following plants belongs to the annual category according to Larngier's lifestyle classification?
===Choices
corn
maple
birch
sunflower
spruce
oak
fern
cactus
palm
pine | corn | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
The heating equipment that combines a heat engine with a heat pump is called a power heating system, wherein the power to drive the heat pump is provided by the work done by the heat engine burning fuel. The heat pump extracts heat from a natural r... | $$
\approx3 H
$$ | general_qa | 296 |
The following is a multiple choice question (with answers).
===Question
Which of the following complex compounds will exhibit highest paramagnetic behaviour? (At. No. : $Ti = 22, Cr = 24, Co = 27, Zn = 30$)
===Choices
$${ \left[ Zn{ \left( N{ H }_{ 3 } \right) }_{ 6 } \right] }^{ 2+ }$$
$${ \left[ Co{ \left( N{ H }... | $${ \left[ Cr{ \left( N{ H }_{ 3 } \right) }_{ 6 } \right] }^{ 3+ }$$ | general_qa | 218 |
The following is a multiple choice question (with answers).
===Question
A ball thrown upward returns to the ground with the initial speed of u. The ball is at a height of 80 m at two times, interval being 6 s. Find u by assuming $g=\quad 10m{ s }^{ 2 }$
===Choices
75 m/s
80 m/s
95 m/s
60 m/s
90 m/s
59 m/s
50 m/s
97 m/... | 50 m/s | general_qa | 122 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements about the basic forms of capitalist rent are correct? (Choose the option that includes all the correct statements)
I. Differential rent is one of the basic forms of capitalist rent.
II. Absolute rent is one of the ... | I and II | general_qa | 169 |
The following is a multiple choice question (with answers).
===Question
A 4-month-old boy is brought to the physician for a well-child examination. He was born at 36 weeks' gestation. The mother has had no prenatal care. His 6-year-old sister has a history of osteosarcoma. He is exclusively breast fed. He is at the 60t... | Fundus examination | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
In paleontological research, skeletal fossils are the most discovered and studied component. Based on the following skeletal descriptions, please determine which type of living organism is most similar to the organism possessing this kind of skelet... | Reptilia | general_qa | 180 |
The following is a multiple choice question (with answers).
===Question
Calculate the minimum $\Delta v$ required to place a satellite already in Earth's heliocentric orbit (assumed circular) into the orbit of Venus (also assumed circular and coplanar with Earth). Consider only the gravitational attraction of the Sun.
... | 5275$\mathrm{~m} / \mathrm{s}$ | general_qa | 226 |
The following is a multiple choice question (with answers).
===Question
What year was the municipality of Berbeo, Boyacá, Colombia, founded?
===Choices
1743
1746
1740
1745
1748
1749
1741
1747
1742
1744 | 1743 | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
Which of the following statements about pediatric pseudomeningitis is incorrect?
===Choices
Infection can spread intracranially through unclosed cranial sutures
High fever is always a prominent symptom
It is a viral infection
Cranial nerve palsies... | It is a type of otogenic meningitis | general_qa | 128 |
The following is a multiple choice question (with answers).
===Question
Which of the following is a limiting factor for calculating the maximum sustainable yield of a population?
===Choices
Failing to account for the migration patterns, not considering the movement in and out of the area.
It is complex to predict the ... | Ignoring the age structure of the population, without considering the changes in survival rates and fertility with age. | general_qa | 167 |
The following is a multiple choice question (with answers).
===Question
After blasting during shaft and tunnel excavation, relevant regulations stipulate that workers are only allowed to enter the blasting site after ventilation for ____ min.
===Choices
20
35
30
12
5
18
15
10
25
22 | 15 | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
Which process is primarily used to propagate asparagus?
===Choices
Grafting
Seed propagation
Leaf cuttings
Cuttings
Tissue culture
Tuber division
Rhizome separation
Stem grafting
Air layering
Division of crowns | Division of crowns | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
Which of the following stages does the design of a database include?
I.demand analysis and conceptual structure design
II.logical structure and physical structure design
III.Database implementation
IV.Database operation and maintenance
===Choices
... | All of the above | general_qa | 102 |
The following is a multiple choice question (with answers).
===Question
There is a resonant power amplifier, with $E_{c} = 12 \mathrm{V}$, a loop resonant impedance of $R_{e} = 130 \Omega$, collector efficiency $\eta = 74.5\%$, and output power $P_{o} = 500 \mathrm{mW}$. Now, in order to increase $\eta$, under the cond... | $$
= 8 5. 5 \%
$$ | general_qa | 299 |
The following is a multiple choice question (with answers).
===Question
What types of wall rock alteration are associated with low-temperature hydrothermal deposits?
===Choices
Slate metamorphism - Marbleisation - Obsidian deposition
Sandstone hardening - Quartzite formation - Gneiss transition
Quartz veining - Feldsp... | Alum Stone - Calcite - Kaolinization | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
The relation between time t and distance x is $t = a{x^2} + bx$ where a and b are constants. The retardation is ( if v is velocity of the particle ):
===Choices
none of these
$$\dfrac{2a{v^2}}{b}$$
$$\dfrac{2a{v^2}}{2b}$$
$$\dfrac{2a{v^3}}{b^2}$$
... | $$\dfrac{2a{v^2}}{b}$$ | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
Please fill in the blanks with the most appropriate option based on semantics and relevant syntactic knowledge.Respectant la volonté du poète qui refusait toute cérémonie religieuse et demandait ____ être conduit à sa dernière ____ dans le corbilla... | à,demeure, auquel, voué | general_qa | 251 |
The following is a multiple choice question (with answers).
===Question
An embankment filled with soil is called a high embankment when its height exceeds _____.
===Choices
10m
18m
30m
14m
20m
25m
28m
15m
22m
12m | 18m | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
When painting a mesh weave, we use the base texture of the mesh weave fabric that we paint ______ operation.
===Choices
Brushes - Brush Collection - Canvas - Weave
Effects - Effect Controls - Surfaces - Textile Mesh
Modes - Mode Settings - Pattern... | Filters - Filter Library - Textures - Mosaic Collage | general_qa | 149 |
The following is a multiple choice question (with answers).
===Question
Who won the 2003 SIGPLAN John C. Reynolds Doctoral Dissertation Award?
===Choices
Godmar Bock
Godmar Bax
Godmar Back
Godmar Baxk
Godmar Bacx
Godmar Beck
Godmar Bac
Godmar Batch
Godmar Bach
Godmar Bak | Godmar Back | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
To achieve diminishing returns to scale, what should manufacturers do?
===Choices
Constantly alter different production factors periodically.
Periodically rotate various production factors in proportion.
Reduce various production factors continuou... | Continuously increase various production factors in proportion. | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
The mass of the steam hammer is 12 t, and it falls onto the anvil block at a speed of 5 m/s. The combined mass of the anvil block and the forging is 250 t. Determine the work absorbed by the forging $A_{1}$, the work consumed by the foundation vibr... | $$
A_{1}=1 4 3 ~ \mathrm{k N} \cdot\mathrm{m}, ~ ~ A_{2}=6. 8 7 ~ \mathrm{k N} \cdot\mathrm{m}, ~ ~ \eta=0. 9 5.
$$ | general_qa | 738 |
The following is a multiple choice question (with answers).
===Question
A plane sound wave with a frequency of 500 Hz and a sound pressure level of 60 dB (reference sound pressure $0.0002 \mu\mathrm{bar}$) is incident perpendicularly on the interface between air and another medium (whose characteristic impedance is 830... | Answer: 0.0066 $\mathrm{Pa}$; 0.027 $\mathrm{Pa}$; 17.2 $\mathrm{cm}$ | general_qa | 487 |
The following is a multiple choice question (with answers).
===Question
Two point charges $+8q$ and $-2q$ are located at $x\,=\,0$ and $x\,=\,L$ respectively. The location of a point on the $X-axis$ at which the net electric field due to these two point charges is zero, is
===Choices
$$\frac{L}{6}$$
$$\frac{L}{9}$$
$... | $$8L$$ | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
How many of the following logical argument forms and inferences are valid?
1. All S are P. Therefore, some S are P.
2. Some S are P. Therefore, some P are S.
3. No S are P. Therefore, it is not the case that some S are P.
4. Some S are P. Therefore... | 4 | general_qa | 218 |
The following is a multiple choice question (with answers).
===Question
About the rondo form, how many of the following statements are correct? ( )
① In the rondo form structure, attachments such as an introduction, connecting passage, and epilogue may appear
② The rondo form structure is mainly composed of the first t... | 3 | general_qa | 139 |
The following is a multiple choice question (with answers).
===Question
If in a musical phrase consisting of two parts, the melodic lines of both parts are developed from the same motif, then
===Choices
There is no modulation in the phrase
The structure of the phrase may be represented as a+b
The phrase is a balanced ... | The structure of the phrase may be represented as a+b | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
What is the total number of runs in each period of the $\mathbf{m}$ sequence composed of n-level shifters? What is the number of runs of length $k ( 1 \! \leq\! k \! \leq\! \mathbf{n} \!-\! 1)$ ?
===Choices
$2^{n-2}, \quad2^{n-k-2}$
$2^{n-2}, \qua... | $2^{n-1}, \quad2^{n-k-1}$ | general_qa | 253 |
The following is a multiple choice question (with answers).
===Question
Magnetic field at p on the axis of two coplanar, concentric current carrying loop is zero if:
===Choices
\dfrac {i_1}{i_2} = \dfrac {5}{2} \sqrt {\dfrac {7}{5}}
$ \dfrac {i_2}{i_1}$ = $\dfrac {5}{2}$ $ \sqrt {\dfrac {5}{8}} $
$ \dfrac {i_2}{i_1} ... | $ \dfrac {i_1}{i_2}$ = $\dfrac {5}{2}$ $ \sqrt {\dfrac {8}{5}} $ | general_qa | 270 |
The following is a multiple choice question (with answers).
===Question
The known system function of the analog filter is: $$H_{\mathrm{a}}(s)=\frac{1}{s^{2}+s+1}$$ Try converting it into the system function $H(z)$ of a digital filter using the impulse invariance method. Let the time-domain sampling interval $T=2$s for... | $$H(z)=\frac{2\sqrt{3}}3\cdot\frac{z^{-1}\mathrm{e}^{-1}\sin\sqrt{3}}{1-2z^{-1}\mathrm{e}^{-1}\cos\sqrt{3}+z^{-2}\mathrm{e}^{-2}}$$ | general_qa | 799 |
The following is a multiple choice question (with answers).
===Question
A weightless rod of length $l$ with a small load of mass $m$ at the end is hinged at point $A$ as shown and occupies a strictly vertical position, touching a body of body of mass $M$. A light jerk sets the system in motion.
(a) For what mass ratio ... | (a) $4$; (b) $\cfrac { 1 }{ 2 } \sqrt { \cfrac { gl }{ 2 } } $ | general_qa | 500 |
The following is a multiple choice question (with answers).
===Question
In a plug flow reactor, an acetic acid hydrolysis reaction is carried out. The concentration of acetic acid entering the reactor is $c_A = 0.3 \text{ kmol} \cdot m^{-3}$, and the required conversion rate is $x_A = 70\%$ (based on the feed). The fee... | $123L$ | general_qa | 252 |
The following is a multiple choice question (with answers).
===Question
The SQL statement that adds a filegroup to the database is ().
===Choices
DROP FILEGROUP TableGroup
ALTER FILEGROUP TableGroup
ADD FILEGROUP TableGroup
ADD GROUP TableGroup
ALTER DATABASE ADD NEW FILEGROUP TableGroup
ALTER DATABASE DROP FILEGROUP ... | ADD FILEGROUP TableGroup | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
Three gears A, B and C are in contact with each other and rotate about their respective axes passing through the their centre of mass. Radius of gear 'A' is 'R' that of 'B' is 2R and that of 'C' is 3R. When 'A' is given angular velocity $'\omega '... | $${ { \omega }_{ 1 }<\omega }_{ 2 }$$ | general_qa | 371 |
The following is a multiple choice question (with answers).
===Question
On October 1, 2012, Next Media Group announced the transfer of its television business 'Next TV'. Who was the transaction partner?
===Choices
Lien Tai-sheng, Founder of Era Group
Lien Tai-sheng, President of Era Group
Lien Tai-sheng, Chief Strateg... | Lien Tai-sheng, Chairman of Era Group | general_qa | 166 |
The following is a multiple choice question (with answers).
===Question
Which type of dust is suitable for using a wet dust collector?
===Choices
Slaked lime
Flour
Cement
Power Plant Smoke and Dust | Power Plant Smoke and Dust | general_qa | 45 |
The following is a multiple choice question (with answers).
===Question
If a hollow sphere (mass=$m$ and radius=$r$) is filled with non viscous fluid and is allowed to rolled on horizontal plane with velocity $v$,then
===Choices
Angular momentum about a fixed point on ground is $\dfrac{13mvr}{3}$
Angular momentum abou... | Angular momentum about a fixed point on ground is $\dfrac{8mvr}{3}$ | general_qa | 245 |
The following is a multiple choice question (with answers).
===Question
Fixed mass of an ideal gas contained in a $24.63L$ sealed rigid vessel at $1$ atm is heated from $-{ 73 }^{ o }C$ to ${ 27 }^{ o }C$. Calculate change in Gibb's energy if entropy of gas is a function of temperature as $S=2+{ 10 }^{ -2 }T(J/K)$: (Us... | $$781.5J$$ | general_qa | 186 |
The following is a multiple choice question (with answers).
===Question
The shell plating consists of
===Choices
Flat plate keel, bottom strakes, frame strakes, side strakes
Keel, flat plate keel, bottom strakes, side strakes
Flat plate keel, bottom strakes, deck strakes
Keel, bottom strakes, side strakes, deck strake... | Flat plate keel, bottom strakes, deck strakes | general_qa | 84 |
The following is a multiple choice question (with answers).
===Question
Art as a dramatic experience is highlighted in ().
===Choices
Broad approach
Sensory perception
Conventional angle
Common theme
Unique perspective
Standard interpretation
Common involvement
Non-utilitarian pleasure
Usual method
Special focus | Special focus | general_qa | 62 |
The following is a multiple choice question (with answers).
===Question
Water enters through end $A$ with speed $v_{1}$ and leaves through end $B$ with speed $v_{2}$ of a cylindrical tube $AB.$ The tube is always completely filled with water. In case $I$ tube is horizontal and in case $II$ it is vertical with ... | Each case | general_qa | 179 |
The following is a multiple choice question (with answers).
===Question
What musical established Broadway as the center of American musical theater production?
===Choices
Wicked
Rent
Phantom of the Opera
Cats
Chicago
West Side Story
Hamilton
The Sound of Music
Les Misérables
Miss Saigon | The Sound of Music | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
The monochromaticity of a photon with a wavelength of $$\lambda=5000 \, \text{Å}$$ is $\Delta\lambda/\lambda=10^{-7}$. Find the position uncertainty of this photon, $$\Delta\mathbf{x}$$.
Answer is___.
===Choices
3m
8m
10m
1m
7m
5m
2m
4m
6m
9m | 5m | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
For ships equipped with bow thrusters, their mark is painted
===Choices
On the bow
Midships
On the stern
Behind the bulbous bow mark | Behind the bulbous bow mark | general_qa | 47 |
The following is a multiple choice question (with answers).
===Question
For the reaction at 298K $CaCO_{3}(s)\rightarrow CaO(s)+CO_{2}(g), \Delta H^{o}=178.3kJ,\Delta S^{o}=160Jk^{-1}$Select correct statement$(s)$:
===Choices
The reaction is spontaneously in forward direction only at temperature above $1114K$
The reac... | The reaction is spontaneously in forward direction onlt at temperature above $1.114K$ | general_qa | 263 |
The following is a multiple choice question (with answers).
===Question
Statement 1 | R is a splitting field of some polynomial over Q. Statement 2 | There is a field with 60 elements.
===Choices
False, False
Statement 1 is True, Statement 2 is Not Given
Statement 1 is False, Statement 2 is Not Given
Both statements a... | False, False | general_qa | 127 |
The following is a multiple choice question (with answers).
===Question
Which is the potentially reducing carbon atom on the glucose group at the right end of the cellulose molecule?
===Choices
First
Sixth
Seventh
Fifth
Eighth
Second
Fourth
Tenth
Ninth
Third | First | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
Given that ∆H°_CO2(g) = \rule{1em}{1pt} 94.0, ∆H°_CO(g) = \rule{1em}{1pt} 26,4, ∆H°_H2O(l) = 68.4 and ∆H°_H2O(g) = -57.8 Kcal/mole, determine the heats of reaction of (1) CO(g) + (1/2)O_2 (g) \rightarrow CO_2 (g), (2) H_2(g) + (1/2) O_2 (g) \righta... | -67.6 Kcal/mole, -68.4 Kcal/mole, +10.6 Kcal/mole | general_qa | 483 |
The following is a multiple choice question (with answers).
===Question
During which period of geological history did the Glossopteridales become extinct?
===Choices
Middle Triassic
Middle Permian
Late Jurassic
Early Carboniferous
Early Permian
Late Triassic
Early Jurassic
Early Cretaceous
Early Triassic
Late Permian | Early Triassic | general_qa | 73 |
The following is a multiple choice question (with answers).
===Question
According to the classification of storage substances, what are the seeds of more than 90% of plants?
===Choices
Salt content
Fibrous
Protein's
Moisture quality
Sugary
Vitamin's
Starch
Enzymatic
mineral
Oily | Oily | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
In which year did the uprising of the sailors of the Baltic Sea 'Gangut' battleship occur in Russia?
===Choices
1912
1910
1911
1914
1913
1917
1916
1915
1919
1918 | 1915 | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
In the pneumoconiosis X-ray diagnostic criteria, what does a "q" shadow refer to?
===Choices
Round shadows with a diameter of 3 to 10 mm
Irregular small shadows with a width of less than 1.5 mm
Irregular shadows with a diameter of less than 1 mm
R... | Round shadows with a diameter of 1.5 to 3 mm | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
Given an astronomical telescope with an objective lens diameter D=100 mm and a human pupil diameter d=2 mm, what magnification should be chosen for the telescope to fully utilize the resolving power of the objective lens?
===Choices
40
25
60
50
80... | 50 | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
${Cu}^{+} (aq)$ is unstable in solution and undergoes simultaneous oxidation and reduction, according to the reaction:$2{Cu}^{+}(aq)\rightleftharpoons {Cu}^{2+}(aq)+Cu(s)$choose correct ${E}^{o}$ for above reaction if${E}_{{Cu}^{2+}/Cu}^{o}=0.34V$ ... | $$+0.38V$$ | general_qa | 216 |
The following is a multiple choice question (with answers).
===Question
China unwaveringly pursues an independent foreign policy of peace and follows a path of peaceful development, which is determined by the country's ( ).
===Choices
socialist nature and international status
socialist nature and global influence
nati... | socialist nature and international status | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
The number of home runs the Boston Red Sox hit in eight consecutivegames were 2, 3, 0, 3, 4, 1, 3, 0. (a) What is the mean number of home runs hit? (b) What is the median? (c) What is the mode?
===Choices
Mean: 2.5, Median: 3, Mode: 0
Mean: 1.5, M... | Mean: 2, Median: 2.5, Mode: 3 | general_qa | 247 |
The following is a multiple choice question (with answers).
===Question
What is the first pumped storage power station built in Hainan Province?
===Choices
Wenchang Pumped Storage Power Station
Tunchang Pumped Storage Power Station
Qionghai Pumped Storage Power Station
Wanning Pumped Storage Power Station
Lingshui Pum... | Qiongzhong Pumped Storage Power Station | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
Consider an air stream flowing over a smooth solid naphthalene plate with a velocity of 116 ft/sec at points far away from the surface of the plate. The air stream pressure is 1 atm. and the temperature of the system is 115°F. Assume the influence ... | 393 ft/hr, 0.132 lb/hr, 314.4 ft/hr, -0.2582 lb/ft^4 | general_qa | 551 |
The following is a multiple choice question (with answers).
===Question
An irreversible gas-solid catalytic reaction has a reaction rate of
$$
(-r_{\mathrm{A}} ) \!=\! k c_{\mathrm{A}} \!=\! 10^{-6} \, \mathrm{mol} / (\mathrm{s \cdot cm}^{3})
$$
When $c_{\mathrm{A}} \!=\! 10^{-2} \, \mathrm{mol/L}$, the pressure is 0.1... | $$
R_{\mathrm{P}} \!=\! 0. \ 1 \mathrm{c m} \!
$$ | general_qa | 489 |
The following is a multiple choice question (with answers).
===Question
Occasional patients have stenosis of the aortic valve, but also have a narrowed left ventricular outflow tract just proximal to the valve, If the maximal systolic velocity exiting the aortic valve stenosis is $ meters/sec and the flow rate is 350 m... | $73.5mmHg$ | general_qa | 193 |
The following is a multiple choice question (with answers).
===Question
A plane wave of monochromatic light falls normally on a uniform thin film of oil which covers a glass plate. The wavelength of source can be varied continuously. Complete destructive interference is observed for $\lambda=5000\mathring { A } $ and $... | $$6.738\times { 10 }^{ -5 }cm$$ | general_qa | 283 |
The following is a multiple choice question (with answers).
===Question
Which of the following proteases is involved in the DNA replication process?
===Choices
Transcriptase
RNA Polymerase
Histone deacetylase
Methyltransferase
Serine endopeptidases
metalloproteinase
Restrictase
Endonuclease
Helicase
Aminotransferase | Helicase | general_qa | 83 |
The following is a multiple choice question (with answers).
===Question
Which of the following indicates the correct order of the principal layers of the earth's atmosphere from top to bottom?
===Choices
Troposphere - Exosphere - Stratosphere - Thermosphere - Mesosphere
Exosphere - Troposphere - Stratosphere - Mesosph... | Exosphere - Thermosphere - Mesosphere - Stratosphere - Troposphere | general_qa | 210 |
The following is a multiple choice question (with answers).
===Question
A charged particle is deflected by two mutually perpendicular oscillating electric fields such that the displacement of the particle due to each one of them is given by $x=lpha cos \left ( \omega t \right ) and y= lpha cos\left ( \omega t+\frac{\... | A circle with equation $x^{2}+y^{2}=a^{2}$ | general_qa | 346 |
The following is a multiple choice question (with answers).
===Question
As a physical education teacher, what is the essential professional teaching language for teachers? It is a fundamental skill and essential teaching skill that physical education teachers must master.
===Choices
Athletic Coaching Techniques
Questi... | Command Skill | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
What is the ChemSpider ID of diazepam?
===Choices
2907
2906
2904
2902
2908
2905
2903
2911
2909
2910 | 2908 | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
There is a planet whose mass and radius are both half of Earth's. Calculate: when an object is thrown vertically upward from the surface of this planet with a velocity of 19.6 m/s, the maximum height the object can reach is().
===Choices
27.4m
11.... | 9.8m | general_qa | 125 |
The following is a multiple choice question (with answers).
===Question
Which two intervals are both consonant and altered?
"A": "♯c - ♯♯F", "B": "♭b - ♯b", "C": "♭♭A - ♭♭G", "D": "♯♯D - C"
===Choices
AC
AD
BC
BD | BD | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
At $298$K, the standard reduction potentials are $1.51$V for $Mn{ O }^-_4$|$Mn^{2+}$, $1.36$V for $Cl_2$|$Cl^-$, $1.07$V for $Br_2$|$Br^-$ and $0.54$V for $I_2$|$I^-$. At pH$=3$ permanganate is expected to oxidize: $\left(\displaystyle\frac{RT}{F}0... | $Cl^-, Br^-$ and $I^-$ | general_qa | 259 |
The following is a multiple choice question (with answers).
===Question
An air-water-vapor mixture at 1atmand 75°F has a relative humidity of 0.45. For this mixture, calculate the specific humidity, the dew point and the partial pressures.
===Choices
Specific humidity: 7.000 × 10^-3 lbmwater/lbmair, Dew point: 49.00°F... | Specific humidity: 8.297 × 10^-3 lbmwater/lbmair, Dew point: 52.15°F, Partial pressures: 0.1935pisa (water), 14.5065pisa (air) | general_qa | 650 |
The following is a multiple choice question (with answers).
===Question
The electric potential at a certain distance from a point charge $Q$ is $810 V$ and electric field is $300 N/C$. The minimum speed with which a particle of charge $-Q$ and mass $m = 6 \times 10^{-16} kg$ should be projected from that point so that ... | $$81 \times 10^{4} m/s$$ | general_qa | 212 |
The following is a multiple choice question (with answers).
===Question
For a one-dimensional crystal, the electron energy band can be expressed as
$$
E ( k )=\frac{\hbar^{2}} {m a^{2}} \Big( \frac{7} {8}-\cos k a+\frac{1} {8} \cos 2 k a \Big)
$$
where $a$ is the lattice constant. What is the bandwidth ?
===Choices
$\... | $\frac{2\hbar^{2}}{ma}$ | general_qa | 228 |
The following is a multiple choice question (with answers).
===Question
The formation process of river runoff can be divided into the runoff generation process and the ( ) process?
===Choices
Filtration
Infiltration
Sedimentation
Dissolution
Accumulation
Confluence
Precipitation
Condensation
Erosion
Evaporation | Confluence | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
Now consider the same picture from the perspective of a linguistic anthropologist. Given the same choice of topics/questions, what do you think might most interest a linguistic anthropologist?
===Choices
The sequence of courses served at the meal
... | The relationship of everyone at the meal | general_qa | 132 |
The following is a multiple choice question (with answers).
===Question
Assuming the different arrival times of a given renewal counting process follow an exponential distribution
$$
F_{z} ( t )=\left\{\begin{cases} {{{1-\mathrm{e}^{-\lambda t}}}} & {{{t \geq0}}} \\ {{{0,}}} & {{{t < 0}}} \\ \end{cases} \right.
$$
Dete... | $$F_{T_i}(t)=\begin{cases}1-\mathrm{e}^{-\lambda t}\sum_{i=0}^{t-1}\frac{(\lambda t)^i}{i!},&t\geqslant0\\\\0 ,&t<0\end{cases}$$ | general_qa | 777 |
The following is a multiple choice question (with answers).
===Question
The experiment measured that the heat capacity of iron is $c_{V}^{( 1 )}=0.054 \ \text{cal/mol}\cdot K$ at $T_{1} = 20 \ \text{K}$, and $c_{V}^{( 2 )}=0.18 \ \text{cal/mol}\cdot K$ at $T_{2} = 30 \ \text{K}$. What is the Debye temperature of iron ?... | $$
4 1 3 ( \mathrm{K} )
$$ | general_qa | 281 |
The following is a multiple choice question (with answers).
===Question
Suppose you have a product type license plate attachment, which of the following types of products do you need to make the best use of it?
===Choices
luggage rack
trailer hitch cover
license plate frame
license plate holder
steering wheel protecto... | trailer hitch cover | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
It is observed that some of the spectral lines in hydrogen spectrum have wavelengths almost equal to those of the spectral lines in ${He}^{+}$ ion. Out of the following the transitions in ${He}^{+}$ that will make this possible is
===Choices
$n=6$... | $n=3$ to $n=1$ | general_qa | 144 |
The following is a multiple choice question (with answers).
===Question
$n$ cells of each of EMF $E$ and internal resistance $r$ send the same current $R$ whether the cells are connected in series or parallel, then :
===Choices
$$R = \sqrt{n} \dfrac{E}{2r}$$
$$R = \sqrt{n} \dfrac{E}{3r}$$
$$R = nr$$
$$r = nR$$
$$R = \... | $$R = r$$ | general_qa | 204 |
The following is a multiple choice question (with answers).
===Question
A non-relativistic particle with mass $m$ and charge $q$ moves in an electromagnetic field $B = \nabla \times A$. Define the mechanical momentum operator:
$$
L = \frac{1}{2} \left( \boldsymbol{r} \times m \boldsymbol{v} - m \boldsymbol{v} \times \b... | $$
\frac{1} {2} \left[ \boldsymbol{r} \times\boldsymbol{F}-\boldsymbol{F} \times\boldsymbol{r} \right]
$$ | general_qa | 597 |
The following is a multiple choice question (with answers).
===Question
Evaluate the limit:
$$
\lim_{x \to 0}\left(\frac{ \ln\left(1+x+x^2\right)+\ln\left(1-x+x^2\right) }{ x^2 }\right)
$$
===Choices
2
0
-1
1/3
1
3
1/2
2/3 | 1 | general_qa | 94 |
The following is a multiple choice question (with answers).
===Question
The distinctions in _____ status, age conditions, and gender of a population are referred to as the population structure, also known as the ______.
===Choices
economic, population composition
financial, population makeup
economic, social stratific... | economic, population composition | general_qa | 97 |
The following is a multiple choice question (with answers).
===Question
The PC program counter holds the address of the next instruction and has the same number of bits as in ().
===Choices
Arithmetic Logic Unit
Control Memory Register
Input/Output Register
Data Bus Register
Instruction Pointer Register
Program Status... | Main Memory Address Register | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
Environmental variables can be estimated through ___.
===Choices
$\mathrm{H}_{1}$ population
$\mathrm{B C}_{1}$ population
$\mathrm{F}_{2}$ population
$\mathrm{C}_{1}$ population
$\mathrm{G}_{4}$ population
$\mathrm{J}_{3}$ population
$\mathrm{D}_... | $\mathrm{F}_{1}$ population | general_qa | 117 |
The following is a multiple choice question (with answers).
===Question
Which of the following plants has stronger drought resistance?
===Choices
Sun-loving bamboo
Dry acacia tree
Drought cypress tree
Thirsty eucalyptus
dryland willow
Chinese jujube
Mulberry Tree
Chinese Wisteria
Arid pine tree
Water-resilient oak | Chinese jujube | general_qa | 80 |
The following is a multiple choice question (with answers).
===Question
The center frequency of the $^{1}H ^{35}Cl$ absorption band is $f_{0}=8.66 \times 10^{13} \mathrm{Hz}$, with an interval of approximately $\Delta f \approx 6 \times 10^{11} \mathrm{Hz}$ between each absorption peak on either side of the center. Wha... | $$
0.179eV
$$ | general_qa | 231 |
The following is a multiple choice question (with answers).
===Question
In a certain cylinder, the initial parameters of the air are $p_{1}=8 \mathrm{~MPa,}\; t_{1}=1300°C$. After undergoing a reversible polytropic process, the final state is $p_{2}=0.4 \mathrm{~MPa,}\; t_{2}=400 \mathrm{~}^{\circ} \mathrm{C}$. The gas... | $$
6.9kJ/kg
$$ | general_qa | 327 |
The following is a multiple choice question (with answers).
===Question
In the 1900 report "Clays of New York, Their Properties and Uses," in the Mineralogy of Clays section, it discusses the experiments of Vogt, which show that kaolinite is not the only substance that remains in suspension for a long time. Tests inclu... | quartz from Limousin | general_qa | 142 |
The following is a multiple choice question (with answers).
===Question
The number of asymptotes of the curve \( y = \frac{x^2 + x}{x^2 - 1} \) is ( ).
===Choices
3
1
0
2
4 | 2 | general_qa | 57 |
The following is a multiple choice question (with answers).
===Question
Normal amniotic fluid volume at 38 weeks of gestation is approximately ____.
===Choices
650ml
2200ml
1500ml
1800ml
2000ml
3000ml
500ml
1000ml
2500ml
750ml | 1000ml | general_qa | 91 |
The following is a multiple choice question (with answers).
===Question
A 10-year-old boy comes for a post-operative clinic visit with his ENT surgeon three months after airway reconstruction surgery and placement of a tracheostomy tube. Since the surgery, he says that he has been able to breathe better and is now gett... | First branchial arch | general_qa | 224 |
The following is a multiple choice question (with answers).
===Question
Consider the following statements concerning F.C. acacia.I. It is used for the preparation of aromatic ketones.II. In this reaction there is the formation of a carbon-carbon bondIII. For this reaction, nitrobenzene can be used as solventIV. Acylium... | I ,II,V | general_qa | 154 |
The following is a multiple choice question (with answers).
===Question
Let \( A \) be an \( m \times n \) matrix, then for the homogeneous linear equation system \( Ax = 0 \), the conclusion is ( ).
===Choices
If \( A \) has a non-zero \( (n-1) \)-order minor, then the equation system has only the trivial solution.
I... | If \( A \) has a non-zero \( n \)-order minor, then the equation system has only the trivial solution. | general_qa | 336 |
The following is a multiple choice question (with answers).
===Question
Hydrological forecasting is the prediction of the magnitude and temporal changes of a hydrological variable during which period?
===Choices
Over the next decade
within the foreseeable period
At a certain moment
For a long period in the past
Throug... | within the foreseeable period | general_qa | 90 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the coefficients of the reciprocal of the 55th cyclotomic polynomial, φ(55)(x), which is the polynomial whose roots are the primitive 55th roots of unity. Given the input x_list (a series of val... | [0, 0, 0, 0, 0, 0, 0, 0, 0, 0] | general_qa | 429 |
The following is a multiple choice question (with answers).
===Question
What is the purpose of surrealist literature, with its emphasis on automatic writing and dream recording?
===Choices
Pursue the freedom and innovation of literary creation, and get rid of the shackles of traditional reason and logic
Create a compl... | Pursue the freedom and innovation of literary creation, and get rid of the shackles of traditional reason and logic | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
______is the science that studies the spatial and temporal laws of human phenomena on the Earth's surface.
===Choices
Urban ethnography
Human geography
Behavioral economics
Comparative politics
Political history
Environmental sociology
Economic so... | Human geography | general_qa | 72 |
The following is a multiple choice question (with answers).
===Question
Use the derivative property of Laplace transforms to solve the differential equation y' - y = e^-x(1) where y(0) = 0 is the initial value of y.
===Choices
cosh x
(1 / 2)e^x - (1 / 2)e^-x
e^-x
e^x - e^-x
(1 / 2)e^x + (1 / 2)e^-x
e^x + x
x^2 e^x
e^x... | sinh x | general_qa | 133 |
The following is a multiple choice question (with answers).
===Question
Non-septate hyphae with a tendency to branch at 90 degree angle is characteristic of:
===Choices
Mucormycosis
Aspergillosis
Aspergillus fumigatus
Cryptococcus neoformans
Aspergillus flavus
Aspergillus terreus
Rhizopus stolonifer
Coccidioides immit... | Mucormycosis | general_qa | 104 |
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