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
Two plano- concave lenses of glass of refractive index $1.5$ have radii of curvature of $20$ and $30\ cm$. They are placed in contact with curved surfaces towards each other and the space between them is filled with a liquid of refractive index $(4... | convergent lens, $f = -72\ cm$ | general_qa | 232 |
The following is a multiple choice question (with answers).
===Question
Aesthetic judgments can be ().
===Choices
Historically determined
Naturally inherent
Morally dictated
Socially constructed
Universally uniform
Emotionally detached
Entirely logical
Culturally conditioned
Environmentally imposed
Individually arbitr... | Culturally conditioned | general_qa | 67 |
The following is a multiple choice question (with answers).
===Question
The enzyme that catalyzes peptide bond formation is called peptidyl transferase because it is capable of?
===Choices
Transfer the growing peptide chain to a new amino acid.
Transferring amino acids from tRNA to an elongating peptide chain
Moving t... | Transfer the growing peptide chain to a new amino acid. | general_qa | 159 |
The following is a multiple choice question (with answers).
===Question
Let $n$ be the smallest positive integer such that the last $2015$ digits of $21^n$ are $000\ldots0001$ , where there are $2014$ $0$ 's followed by one $1$ . Compute the remainder when the number of positive factors of $n$ is divided by $1000$ .
=... | 210 | general_qa | 140 |
The following is a multiple choice question (with answers).
===Question
A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration cycle between 0.14 and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05 kg/s.
(1) Determine the rate of heat removal from th... | (1) 7.19 kW, 1.81 kW
(2) 9.00 kW, 3.97 | general_qa | 445 |
The following is a multiple choice question (with answers).
===Question
Which stages does the content organization include?
===Choices
Compilation of Raw Sources , Merging of Data Streams , Division of Content Sets
Collection of Data Elements , Distribution of Raw Content , Organization of Core Segments
Understanding ... | Understanding of Information Content , Disclosure of Information Content , Categorization by information content | general_qa | 178 |
The following is a multiple choice question (with answers).
===Question
One of the following describes the location of "One-F" disease. Which one is correct?
===Choices
Small circular ulcers on the inner cheek of adults and seniors
Asymmetrical abrasions on both sides of the frenulum in infants and young people
Symmet... | Traumatic ulcers on both sides of the frenulum in infants and young children | general_qa | 171 |
The following is a multiple choice question (with answers).
===Question
When ( ), the aggregate demand curve is steeper.
===Choices
investment increases by $15 billion and consumption increases by $15 billion
investment increases by $45 billion and consumption increases by $30 billion
investment increases by $45 billi... | investment increases by $15 billion and consumption increases by $60 billion | general_qa | 187 |
The following is a multiple choice question (with answers).
===Question
The formation of keloid scars may be related to which of the following cells?
===Choices
bone cells
hair cells
skin cells
gland cells
mast cells
muscle cells
blood cells
nerve cells
fat cells
stem cells | mast cells | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
Which of the following participate in photophosphorylation?
===Choices
P680, P700, chlorophyll c
P680, P700, cytochrome f
ATP synthase, plastocyanin, P700
Cytochrome c, Cytochrome b, NADH
P680, P700, ferredoxin
P680, P700, carotenoids
P680,P700,P4... | P680, P700, chlorophyll b | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
How many rows of throat teeth does grass carp have?
===Choices
Seven rows
Four rows
Three rows
Six rows
Five rows
One row
Nine rows
Eight rows
Ten rows
Two rows | Two rows | general_qa | 57 |
The following is a multiple choice question (with answers).
===Question
A long cylindrical pipe of radius $20cm$ is closed at its upper end and has an airgight piston of negligible mass as shown. When a $50kg$ mass is attached to the other end of th episton, it moves down. If the air in the enclosure is cooled from tem... | $$0.01$$ | general_qa | 195 |
The following is a multiple choice question (with answers).
===Question
A pendulum clock loses 12 s a day if the temperature is ${40^ \circ }C$ and gains 4 s a day if the temperature is ${20^ \circ }C$. The temperature at which the clock will show correct time, and the co-efficient of linear expansion ()of the metal o... | $$30^\circ \text{C}; \, \alpha = 1.85 \times 10^{-3} \, /^\circ \text{C}$$ | general_qa | 458 |
The following is a multiple choice question (with answers).
===Question
We now define an algorithm: The definition of a(n) is the expansion of (phi(-q^3) * psi(q))^3 / (phi(-q) * psi(q^3)) in powers of q, where phi(q) and psi(q) are Ramanujan's theta functions. Ramanujan's theta functions are defined as follows: \n\nph... | [348, 462, 312, 240, 143, 285, 403, 414, 406, 270] | general_qa | 696 |
The following is a multiple choice question (with answers).
===Question
The Prandtl mixed length theory establishes the relationship between ().
===Choices
Molecular viscosity and turbulent stress
Pressure and turbulent shear stress
Turbulent stress and time vector
Turbulent shear stress and pressure
Pulse velocity an... | Pulsating velocity and time averaged velocity gradient | general_qa | 103 |
The following is a multiple choice question (with answers).
===Question
In which position did Band of Joy's eponymous album debut on the UK Albums Chart?
===Choices
#10
#7
#3
#9
#2
#5
#8
#6
#1
#4 | #3 | general_qa | 66 |
The following is a multiple choice question (with answers).
===Question
In his discussion of discrimination in war, Valls suggests that
===Choices
the difference between combatants and noncombatants is categorical and clear.
there is no difference between combatants and noncombatants.
there is a fine line between comb... | the difference between combatants and noncombatants is a matter of degree. | general_qa | 162 |
The following is a multiple choice question (with answers).
===Question
$C$ is on a semicircle with diameter $AB$ and center $O.$ Circle radius $r_1$ is tangent to $OA,OC,$ and arc $AC,$ and circle radius $r_2$ is tangent to $OB,OC,$ and arc $BC$ . It is known that $\tan AOC=\frac{24}{7}$ . The ratio $\frac{r_2} {r_1}$... | 59 | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
A solenoid of inductance $L$ and resistance $r$ is connected in parallel to a resistance $R$. A battery of emf $E$ and of negligible internal resistance is connected across this parallel combination. At $t=0$, battery is removed then which of the f... | the amount of heat generated in the solenoid due to removing the battery is $\dfrac {E^2L}{2r(r+R)}$ | general_qa | 405 |
The following is a multiple choice question (with answers).
===Question
The monotonic decreasing interval of the function $f(x) =x^{1/2}-x^{2/3}$ is
===Choices
$[0,\\frac{4^6}{3^5}]$
$[\\frac{3^6}{4^6},\\infty]$
$[0,\\frac{3^5}{4^5}]$
$[\\frac{4^6}{3^6},\\infty]$
$[0,\\frac{3^5}{4^6}]$
$[0,\\frac{4^6}{3^6}]$
$[0,\\fra... | $[\\frac{3^6}{4^6},\\infty]$ | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
What is the most powerful digestive fluid for protein digestion?
===Choices
Pulmonary secretion.
Intestinal liquid.
Lymphatic fluid.
Hepatic solution.
Bile secretion.
Cardiac serum.
Renal excretion.
Salivary enzyme.
Gastric fluid.
Pancreatic juice... | Pancreatic juice. | general_qa | 75 |
The following is a multiple choice question (with answers).
===Question
What is a fundamental solution system of the following homogeneous linear equations?
$$ \left\{\begin{matrix} {{{x_{1}-3 x_{2}+x_{3}-2 x_{4}=0}}} \\ {{{-5 x_{1}+x_{2}-2 x_{3}+3 x_{4}=0}}} \\ {{{-x_{1}-1 1 x_{2}+2 x_{3}-5 x_{4}=0}}} \\ {{{3 x_{1}+5 ... | $$
\left(-\frac{5} {1 4}, \frac{3} {1 4}, 1, 0 \right)^{T}, \left( \frac{1} {2},-\frac{1} {2}, 0, 1 \right)^{T}
$$ | general_qa | 826 |
The following is a multiple choice question (with answers).
===Question
Consequence of maternal use of cocaine is:
===Choices
Hydrops
Intracranial hemorrhage
Pulmonary embolism
Renal infarction
Cardiac arrhythmia
Sacral agenesis
Cerebral infarction
Cardiac ischemia
Hypertrichosis
Myocardial infarction | Cerebral infarction | general_qa | 85 |
The following is a multiple choice question (with answers).
===Question
The best time for site preparation for afforestation is ____ months before planting.
===Choices
8 to 10
4 to 8
5 to 7
3 to 6
1 to 2
12 to 15
14 to 17
10 to 14
6 to 9
9 to 11 | 3 to 6 | general_qa | 89 |
The following is a multiple choice question (with answers).
===Question
Information from the optic nerve is initially processed in what part of the brain?
===Choices
cerebellum
hippocampus
frontal lobe
amygdala
occipital lobe
brain stem
hypothalamus
parietal lobe
thalamus
basal ganglia | thalamus | general_qa | 79 |
The following is a multiple choice question (with answers).
===Question
When did the rental control provisions for subdivided units under Part IVA of the Landlord and Tenant (Consolidation) Ordinance come into effect?
===Choices
2024
2026
2022
2020
2025
2023
2019
2021 | 2022 | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
In asymmetric key cryptography, the private key is kept by ______.
===Choices
every user
sender and receiver
sender
cryptographic software
external server
receiver
all the connected devices to the network
encryption algorithm
network administrator... | receiver | general_qa | 64 |
The following is a multiple choice question (with answers).
===Question
The term '___________' refers to the temperate bacteriophage nucleic acid found within lysogenic cells, also known as the prophage.
===Choices
initial bacteriophage
stable bacteriophage
dominant bacteriophage
secondary bacteriophage
integral bacte... | original bacteriophage | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
Which digits of the forefeet are vestigial and tiny on the Isoodon obesulus?
===Choices
the fifth digits
the third and fourth digits
the first and fifth digits
the second digits
the first and second digits
the second and third digits
the third dig... | the first digits | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
Two particles of equal mass m are projected from the ground with speeds $v_1$ and $v_2$ at angles $\theta_1$ and $\theta_2$ as shown in the figure. Given $\theta_2 > \theta_1$ and $v_1 cos \theta_1 = v_2 cos \theta_2$. Which statement/s is/are c... | Particle '2' will be above centre of mass level when both particles are in air. | general_qa | 201 |
The following is a multiple choice question (with answers).
===Question
At $298 K$, when the concentration of $SO₂ in 1 dm³$ of $CHCl₃$ is $1.0 mol$, the equilibrium pressure of $SO₂$ above the liquid surface is $53,702 Pa$. When the concentration of $SO₂$ in $1 dm³$ of water is $1.0 mol$, the pressure of $SO₂$ above t... | $$
0. 4 4 2 \ 5 \ \mathrm{m o l}
$$ | general_qa | 488 |
The following is a multiple choice question (with answers).
===Question
Where is the higher central control for birds' song learning located?
===Choices
Forebrain
External Brain
Back of the head
Edge Brain
Primal Brain
Midbrain
Diencephalon
Cerebellum
Deep Brain
Brain | Brain | general_qa | 65 |
The following is a multiple choice question (with answers).
===Question
Consider a YDSE setup oriented in vertical plane in which light consisting of two wavelengths, 300 nm and 500 nm, is allowed to pass through each slit to form an intensity pattern on the screen kept 1 m away from the slit plane. The separation betw... | $$10msec$$ | general_qa | 283 |
The following is a multiple choice question (with answers).
===Question
An uncharged capacitor of capacitance $100\mu F$ is connected to a battery of emf $20V$ at $t=0$ through a resistance $10\Omega$ , the maximum rate at which energy is stored in the capacitor is
===Choices
2Js
$$20Js$$
$$10Js$$
15Js
12Js
25Js
$$5Js... | $$5Js$$ | general_qa | 114 |
The following is a multiple choice question (with answers).
===Question
Given the state equation of a linear time-invariant discrete system as $x(k+1) = \begin{bmatrix} 0 & 1 & 0 \\ 0 & 0 & 1 \\ \frac{k}{2} & 0 & 0 \end{bmatrix} x(k), \quad k > 0$, determine the range of $k$ for which the system is asymptotically stabl... | $0 < k < 2$ | general_qa | 180 |
The following is a multiple choice question (with answers).
===Question
What can be predicted in the power system load fluctuations listed below?
===Choices
The first type of load changes caused by the switching on and off of electrical equipment.
Type five load alterations due to planned electrical maintenance.
Secon... | The third type of load changes resulting from production and living patterns and variations in weather conditions. | general_qa | 168 |
The following is a multiple choice question (with answers).
===Question
The European rabbit was introduced to Australia from the United Kingdom in 1859, and within just over a decade, its population grew rapidly, competing with cattle and sheep for pasture and becoming a major hazard. From the perspective of population... | Ecological Invasion | general_qa | 116 |
The following is a multiple choice question (with answers).
===Question
In our solar system, which planet has the highest percentage of oxygen in its atmosphere?
===Choices
Mars
Saturn
Uranus
Jupiter
Earth
Pluto
Venus
Europa
Mercury
Neptune | Mercury | general_qa | 63 |
The following is a multiple choice question (with answers).
===Question
Immunosuppressants should not be used in ().
===Choices
Hypersensitivity Disease
Blood Purification
Vaccination
Autoimmune Disease
Inflammation
Immunodeficiency
Infection
Bone Marrow Transplant
Autotransplantation
Cell therapy | Infection | general_qa | 74 |
The following is a multiple choice question (with answers).
===Question
The refrigerant in Lai's refrigeration system is R22, with a cooling capacity of 80 kW. It operates using a vapor compression cycle with an evaporation temperature of $-10^{\circ} C$ and a condensation temperature of $42^{\circ} C$. Determine the v... | $$Fraction_{mass} = 30\%, Fraction_{volume} = 9.735\%$$ | general_qa | 369 |
The following is a multiple choice question (with answers).
===Question
The production of atomic fluorescence is generated by what kind of electron transition.
===Choices
From low-energy state to high-energy state, from low-energy state to ground state
From high-energy state to low-energy state, from high-energy state... | From high-energy state to low-energy state, from high-energy state to ground state | general_qa | 171 |
The following is a multiple choice question (with answers).
===Question
If children already know the concepts of "carrot," "spinach," and "celery" in their daily lives, then learning the concept of "vegetable" belongs to ___.
===Choices
Associative Learning
Derived Class Learning
Subordinate Learning
Primary Learning
... | Superior Learning | general_qa | 92 |
The following is a multiple choice question (with answers).
===Question
Any object orbiting the Earth at a speed of ( ) km/s and less than 11.2 km/s must be able to orbit the Earth in an elliptical orbit.
===Choices
9.7
7.2
10.7
9.2
7.9
8.9
10.3
8.2
6.5
9.5 | 7.9 | general_qa | 95 |
The following is a multiple choice question (with answers).
===Question
A thin uniform wire to bent to form the two equal sides AB and AC triangle ABC. where AB = AC = $5\ cm$. the third side is BC, of length $6\ cm,$ is made from uniform wire of twice the density of first. the center of mass is :
===Choices
$$(2.4,2... | $$(2.4,1.8)\ cm$$ | general_qa | 213 |
The following is a multiple choice question (with answers).
===Question
Romberg quadrature method belongs to ( ), trapezoidal method belongs to ( ).
===Choices
Extrapolation integration techniques, interpolation integration techniques
Numerical integration techniques, analytical integration techniques
Extrapolation in... | Extrapolation integration formulas, interpolation integration formulas | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
The thorium decay series involves the following processes (in the reaction formula, the quantity below "→" indicates the half-life):
$$
{}^{228}Ac \xrightarrow[6.13 h]{\beta^-} {}^{228}Th \xrightarrow[1.913 a]{\alpha} {}^{224}Ra \xrightarrow[3.64 d... | $$
1. 8 8 \times1 0^{-3}
$$ | general_qa | 355 |
The following is a multiple choice question (with answers).
===Question
Calculate the equilibrium constant for the reaction,
$$Zn(s) + Ag_{2}O(s) + H_{2}O(l) \rightarrow 2Ag(s) + Zn^{2+}(aq.) + 2OH^{-}(aq.)$$
when $E_{cell}^{\circ} = 1.11$ at $298\ K$.
===Choices
$$2.499\times 10^{37}$$
$$3.599 \times 10^{37}$$
$$5.59... | $$4.599\times 10^{37}$$ | general_qa | 267 |
The following is a multiple choice question (with answers).
===Question
Professor Porter of Harvard Business School proposed that competitive advantage originates from the following aspects ( )
===Choices
Strategic Alignment
Strategic Flexibility
Market Segmentation
Resource Monopoly
Differentiation
Product Diversific... | Differentiation | general_qa | 68 |
The following is a multiple choice question (with answers).
===Question
In the concentration cell
$$Pt\left( { H }_{ 2 } \right) \begin{vmatrix} HA(0.1M) \ NaA(1M) \end{vmatrix}\begin{vmatrix} HA(1M) \ NaA(1M) \end{vmatrix}\left( { H }_{ 2 } \right) Pt$$
($p{ K }_{ a }$ of $HA=4$)
Cell potential will be:
===Choices
0.... | $$0.03V$$ | general_qa | 187 |
The following is a multiple choice question (with answers).
===Question
In photonic integrated circuit design, what is the most important parameter to consider for achieving mode coupling in a photonic crystal waveguide?
===Choices
intensity of light in the waveguide
width of the waveguide
polarization of the light in... | refractive index of the waveguide | general_qa | 120 |
The following is a multiple choice question (with answers).
===Question
The flux of neutrons achieving thermal equilibrium through a graphite layer well at room temperature (27°C) strikes a thin boron absorber (for boron, the effective cross-section for thermal neutrons is 703 barns), reducing the intensity of the ther... | Up to 93% | general_qa | 172 |
The following is a multiple choice question (with answers).
===Question
The ionic reaction equation of $\mathrm{ [ S i ]+ 2 ( F e O ) + 2 ( C a O ) = ( 2 C a O \cdot S i O_2 ) + 2 [ F e ] }$ is ______.
===Choices
$\left[Si\right]+2\left(Fe^{3+}\right)+4\left(O^{3-}\right)=\left(SiO_{4}^{4-}\right)+2\left[Fe\right]$
$\... | $\left[Si\right]+2\left(Fe^{2+}\right)+4\left(O^{2-}\right)=\left(SiO_{4}^{4-}\right)+2\left[Fe\right]$ | general_qa | 582 |
The following is a multiple choice question (with answers).
===Question
Estimate the pH of an aqueous solution of sodium hydrogenoxalate. Under what conditions is this estimate reasonably reliable?
===Choices
$$
{6. 8 0}
$$
$$
{2. 7 1}
$$
$$
{4. 1 9}
$$
$$
{3. 9 4}
$$
$$
{1. 4 8}
$$
$$
{8. 5 7}
$$
$$
{9. 0 5}
$$
$$
{0... | $$
{2. 7 1}
$$ | general_qa | 161 |
The following is a multiple choice question (with answers).
===Question
A source which is emitting sound of frequency f is initially at $(-r, 0)$ and an observer is situated initially at $(2r, 0)$. If observer and source both are moving with velocities \[ \vec{v}_{\text{observer}} = -\sqrt{2}V \hat{i} - \sqrt{2}V \hat{... | Apparent frequency first increases, then decreases and observer observes the original frequency once during the motion | general_qa | 326 |
The following is a multiple choice question (with answers).
===Question
How many episodes of "Harold and the Purple Crayon" did Van Dyke Parks work on as a composer?
===Choices
14
12
18
11
10
13
9
17
16
15 | 12 | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
Regarding the clinical significance of APTT testing, which of the following statements is correct?
===Choices
In patients with hemophilia A, APTT is often shortened.
APTT is reduced by decreased anticoagulant substances in the blood.
APTT is prolo... | APTT is prolonged with increased anticoagulant substances in the blood. | general_qa | 176 |
The following is a multiple choice question (with answers).
===Question
A hot body, obeying Newton's law of cooling is cooling down from its peak value ${80}^{o}C$ to ${40}^{o}C$. How much time will it take to cool down from ${62}^{o}C$ to ${32}^{o}C$? (given $\ln { 2 } =0.693,\ln { 5 } =1.609$)
===Choices
$8.6$ minut... | $8.6$ minutes | general_qa | 155 |
The following is a multiple choice question (with answers).
===Question
Calculate \DeltaH when 2 moles of Cu are heated from 50°C to 200°C, given that a = 5.41 cal mol^-1 K^-1 b = 1.50 cal mol^-1K^-2
===Choices
7200J
8700J
6800J
5000J
8200J
7540J
6500J
8000J
9000J
7000J | 7540J | general_qa | 132 |
The following is a multiple choice question (with answers).
===Question
At 1600°C, aluminum is used to deoxidize the molten steel. In the molten steel, $w \left[ \ \mathrm{Mn} \ \right]=1$ %, $w \left[ \mathrm{~C~} \right]=0.1\%$. The final oxygen content in the molten steel is $w [\mathrm{O}] = 0.001$ %. Calculate the... | $$
4 7 3 \times1 0^{-3} \%
$$ | general_qa | 312 |
The following is a multiple choice question (with answers).
===Question
Suppose $\mathbf{n}$ is a power of 2, and $\mathrm{n} > 2$, How can you determine the time complexity and the value of the variable count (expressed as a function of n)?
int Time(int n) {
count=0;
x=2;
while(x<n/2) {
x*=2;
count++;
}
return count;
... | $\operatorname{l o g}_{2} n-2;count=\operatorname{log}_{2}n - 2$ | general_qa | 344 |
The following is a multiple choice question (with answers).
===Question
The most common primary symptom of liver cancer is ( ).
===Choices
severe headache
vomiting or diarrhea
hepatic pain
frequent urination
abdominal discomfort only
[ersistent cough
sudden weight gain
jaundice and ascites
increased thirst
loss of app... | hepatic pain | general_qa | 77 |
The following is a multiple choice question (with answers).
===Question
The wingspan of an airplane is 35 meters, the root width is 5 meters, the tip width is 3 meters. What is the wing area?
===Choices
175 ㎡
215 ㎡
170 ㎡
220 ㎡
160 ㎡
200 ㎡
180 ㎡
210 ㎡
230 ㎡
190 ㎡ | 180 ㎡ | general_qa | 110 |
The following is a multiple choice question (with answers).
===Question
Calculate the heat transferred when 100J of work is done on asystem consisting of 1 mole of an ideal gas. At constant temperature, \DeltaE = 0 for the expansion of an ideal gas.
===Choices
100J
-50J
-100J
250J
200J
-150J
0J
150J
-200J
50J | -100J | general_qa | 111 |
The following is a multiple choice question (with answers).
===Question
If the time period $t$ of the oscillating of a drop of liquid of density $d$, radius $r$, vibrating under surface tension $s$ is given by the formula $t=\sqrt {r^{2b}.s^{c}.d^{a/2}}$. It is observed that the time period is directly proportional to ... | $$\dfrac {3}{2}$$ | general_qa | 191 |
The following is a multiple choice question (with answers).
===Question
In the Neo-Riemannian theory, which chord does the C major triad change into after applying the R, L, P transformations (N relation - Nebenverwandt)?
===Choices
♯c minor triad
f minor triad
♭B major triad
a minor triad | f minor triad | general_qa | 76 |
The following is a multiple choice question (with answers).
===Question
Derive a relationship for the depth (or height) $h_{B}$ of a disc-shaped bowl-in-piston direct-injection diesel engine combustion chamber in terms of compression ratio $r_{c}$ , bore $B$ stroke $L$ , bowl diameter $D_{B}$ , and top-center
cylinder-... | 0.85 | general_qa | 195 |
The following is a multiple choice question (with answers).
===Question
The simultaneous solubility of $AgCN(K_{ sp }=2.5\times { 10 }^{ -16 })$ and $AgCl (K_{ sp }=1.6\times { 10 }^{ -10 })$ is $1.0\ M\ { NH }_{ 3 }(aq.)$ are respectively: [Given:${ K }_{ f }({ NH }_{ 3 }{ ) }_{ 2 }^{ + }]={ 10 }^{ 7 }]$
===Choices
$... | $$5.78\times { 10 }^{ -8 }, 0.037$$ | general_qa | 378 |
The following is a multiple choice question (with answers).
===Question
What are the main characteristics that distinguish fiscal distribution from distribution in the field of material production?
===Choices
Mainly based on the ownership of means of production
Mainly distribution of surplus products of the year
Distr... | Distribution based on two powers of the state | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
At what age was Ken Noda invited by President Ronald Reagan and First Lady Nancy Reagan to perform at the White House?
===Choices
21
20
27
18
23
24
19
22
25
26 | 20 | general_qa | 70 |
The following is a multiple choice question (with answers).
===Question
For sloping farmland, what is the primary benefit of using cover crops?
===Choices
decreased soil temperature and moisture loss
increased biodiversity but lower soil nutrient cycling
higher crop yield but reduced soil organic content
improved soil... | increased soil fertility and water retention capacity | general_qa | 122 |
The following is a multiple choice question (with answers).
===Question
The relationship between the exporter and the exclusive distributor is ( ).
===Choices
Supplier-client relationship
Franchise relationship
Entrustment relationship
Consignment relationship
Agency relationship
Representative relationship
Buyer-sell... | Buyer-seller relationship | general_qa | 71 |
The following is a multiple choice question (with answers).
===Question
Relativistic equations for time dilation length contraction and relativistic momentum and energy hold true
===Choices
at speeds near that of light.
only approximately.
at speeds that are a multiple of the speed of sound.
only at speeds greater tha... | at all speeds. | general_qa | 112 |
The following is a multiple choice question (with answers).
===Question
Find the gravitational acceleration due to the Sun at the location of the Earth's orbit (i.e., at a distance of 1 AU).
===Choices
$$0. 0 9 1 ~\mathrm{m / s}^{2}$$
$$0. 0 0 6 ~\mathrm{m / s}^{2}$$
$$0. 0 2 1 ~\mathrm{m / s}^{2}$$
$$0. 1 2 0 ~\mathr... | $$0. 0 0 6 ~\mathrm{m / s}^{2}$$ | general_qa | 264 |
The following is a multiple choice question (with answers).
===Question
What does "YT" mean in the classification of hard alloys?
===Choices
Tungsten Silicon Titanium Hard Alloy
Diamond Titanium Aluminum Hard Alloy
Tungsten Diamond Aluminum Hard Alloy
Tungsten Diamond Nickel Hard Alloy
Tungsten Diamond Titanium Hard A... | Tungsten Diamond Titanium Hard Alloy | general_qa | 104 |
The following is a multiple choice question (with answers).
===Question
Given GSS data showing that women and men have an average of 8.3 (s=15.6) and 8.9 (s=15.5) friends respectively, based on 486 women and 354 men, what is the 95% confidence interval for determining whether the average number of friends for men is gr... | (-1.5,2.7) | general_qa | 187 |
The following is a multiple choice question (with answers).
===Question
A rectangular loop has a sliding connector $PQ$ of length $1$ and resistance $R\Omega$ and it is moving with a speed $v$ as shown. The set-up is paced in a uniform magnetic field going into the plane of the paper. The three currents $I_1,I_2$ and $... | $$I_1=-I_2=\dfrac {B1v}{R},I=\dfrac {2\ B1v}{R}$$ | general_qa | 413 |
The following is a multiple choice question (with answers).
===Question
For a positive integer $n$, define $d(n)$ to be the sum of the digits of $n$ when written in binary (for example, $d(13) = 1+1+0+1=3)$. Let \[ S = \sum_{k=1}^{2020} (-1)^{d(k)} k^3. \] Determine $S$ modulo 2020.
===Choices
1982
1985
1990
1995
1970... | 1990 | general_qa | 158 |
The following is a multiple choice question (with answers).
===Question
Which tooth position corresponds to tooth number 24?
===Choices
Upper left third premolar
Upper right third premolar
Upper right first premolar
Lower left second premolar
Lower right first premolar
Upper left second premolar
Lower right second pre... | Upper left first premolar | general_qa | 87 |
The following is a multiple choice question (with answers).
===Question
What is the density (\(\rho_f\)) of the suspension in a flotation process, determined using a double-pipe differential pressure gas densitometer, where the depth of the long tube is \(h_1 = 0.50 \, \text{m}\), the depth of the short tube is \(h_2 =... | \(\rho_f = 1714 \, \text{kg/m}^3\) | general_qa | 345 |
The following is a multiple choice question (with answers).
===Question
A student who enjoys fishing once caught two scaleless grass carp from the lake. She wanted to determine whether this special phenotype had a genetic basis, so she conducted a series of experiments. What should she do first?
===Choices
Observe the... | Determining the true inheritance of the scaled phenotype in wild-type fish | general_qa | 190 |
The following is a multiple choice question (with answers).
===Question
Different microorganisms in different growth states have different requirements for water activity, the correct order is ( ).
===Choices
Bacteria > Yeast > Fungi
Fungi > Yeast > Bacteria
Fungi < Yeast < Bacteria
Yeast > Fungi > Bacteria
Yeast < Ba... | Fungi < Yeast < Bacteria | general_qa | 126 |
The following is a multiple choice question (with answers).
===Question
Which of the following control methods for gas indicators is suitable for products sensitive to carbon dioxide?
===Choices
Helium segment indicators
Sulfur double index
Double low indicators
Double high indicators
Methane multiple indicators
Oxyge... | Oxygen single index | general_qa | 82 |
The following is a multiple choice question (with answers).
===Question
A bike moves with uniform acceleration such that it crosses point $P$ & $R$ at $10\ m/s$ & $50\ m/s$ respectively. If $QR=2PQ$ and time taken in $P-Q$ is $t_{1}$ & $Q-R$ is $t_{2}$ then :-
===Choices
$$t_{1} = \frac{3}{2}t_{2}$$
$$t_{1} = 2t_{2}$$... | $$t_{1} < t_{2}$$ | general_qa | 219 |
The following is a multiple choice question (with answers).
===Question
The medicinal herb in question splits from the top or divides into two halves, with a yellow-brown or red-brown outer surface and a mostly light yellow-brown, smooth inner surface featuring a longitudinal ridge. It is brittle in texture. The seeds ... | Old Kite | general_qa | 138 |
The following is a multiple choice question (with answers).
===Question
If a particle is incident from the right, find the reflection coefficient and transmission coefficient for a one-dimensional step potential, which is given by
$$
V(x) = \left\{\begin{aligned} & V_{0}, & x > 0 \\ & 0, & x < 0 \\ \end{aligned} \right... | $$
\frac{V_{0}^{2}} {\left( \sqrt{E}+\sqrt{E-V_{0}} \right)^{4}}
$$
$$
1 - \frac{V_{0}^{2}} {\left( \sqrt{E}+\sqrt{E-V_{0}} \right)^{4}}
$$ | general_qa | 815 |
The following is a multiple choice question (with answers).
===Question
A charged particle $P$ leaves the origin with speed $v=v_0$ at some inclination with the $x-$axis. There is a uniform magnetic field B along the $x-$axis. $P$ strikes a fixed target $T$ on the $x-$axis for a minimum value of $B=B_0$. If the pitch o... | $$tan\theta =\dfrac {1}{\pi}$$ | general_qa | 249 |
The following is a multiple choice question (with answers).
===Question
What country did Sarah Young and her husband start a counseling practice for women who had been sexually or spiritually abused?
===Choices
Canada
Australia
South Korea
United Kingdom
United States
New Zealand
South Africa | Australia | general_qa | 57 |
The following is a multiple choice question (with answers).
===Question
What is the representative prescription for treating Jinyin deficiency syndrome?
===Choices
Baizhu Fuling Wan
Liuwei Xingren Wan
Liuwei Jiangzhi Pian
Sishen Fengtang Wan
Yiguan Jian Wan
Liuwei Qianghuo San
Liuwei Baizhu Wan
Liuwei Dihuang Wan
Shiq... | Liuwei Dihuang Wan | general_qa | 109 |
The following is a multiple choice question (with answers).
===Question
In the second major adjustment of China's national defense strategy, what is the layout principle of the "three-line" construction?
===Choices
Elevation, Spread, Rocks
High, Dense, Far
Peaks, Separated, Chambers
Uplands, Open, Crevices
Hilltops, S... | Mountains, Dispersal, Caves | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
Let $n$ be the number of $10$ digit integers divisible by $5$ whose sum of digits is also divisible by $5$ . Find the number of divisors of $n$ .
===Choices
243
230
244
245
240
235
246
250
241
242 | 240 | general_qa | 98 |
The following is a multiple choice question (with answers).
===Question
For small, slowly falling objects, the assumption made in the text that the drag force is proportional to the velocity is a good one. For larger, more rapidly falling objects, it is more accurate to assume that the drag force is proportional to the... | $\frac{2}{49}$ | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
Safe disposal of mercury is -
===Choices
Collect carefully and store in a sealed container for temporary storage
Store in a sealed container and dispose in regular trash
Collect carefully and store in a sealed container for temporary disposal
Cont... | Collect carefully and recycle | general_qa | 107 |
The following is a multiple choice question (with answers).
===Question
If for hydrogen $S_p - S_v = a$ and for oxygen, $S_p - S_v = b$ where $S_p$ and $S_v$ are specific heat at constant pressure and at constant volume, then
===Choices
$a$ and $b$ are not pressures
$$a = 2b$$
$$a = 16b$$
$$a = 6b$$
$$a = 3b$$
$$a = ... | $$a = b$$ | general_qa | 152 |
The following is a multiple choice question (with answers).
===Question
The dimensionless set of velocity v, density ${\rho}$, and pressure p is ().
===Choices
$\frac{\rho\mathrm{p}}{\mathrm{v}^{2}}$
$\frac{\rho v^{2}}{\mathrm{p}}$
$\frac{\rho}{\mathrm{p\mathrm{v}^{2}}}$
$\frac{\rho p}{\mathrm{v}}$
$\frac{\mathrm{v}}{... | $\frac{\rho v^{2}}{\mathrm{p}}$ | general_qa | 183 |
The following is a multiple choice question (with answers).
===Question
What are the three cornerstones of Marxist literary theory?
===Choices
Theory of Class Consciousness, Theory of Economic Determinism, and Theory of False Consciousness.
Theory of Commodity Fetishism, Theory of Revolution, and Theory of Cultural He... | Theory of Reification, Theory of Ideology and Theory of Art Production. | general_qa | 205 |
The following is a multiple choice question (with answers).
===Question
A projectile is thrown with velocity $10\sqrt{2}$ m/s at angle 45 to horizontal. Calculate time interval between the moments when velocity 12.5 m/s. (g = 10 $m/s^2$)
===Choices
$$2.25s$$
$$1.25s$$
$$1.0 s$$
$$1.75s$$
$$0.5s$$
$$1.5 s$$
$$0.85s$$
$... | $$1.5 s$$ | general_qa | 137 |
The following is a multiple choice question (with answers).
===Question
The orbits of several stars have been measured orbiting the massive black hole near the center of our Galaxy. One of them has an orbital period of 15 years, and the orbital radius is 0.12 seconds of arc (as seen from the Earth). Take the distance t... | $$\simeq3. 7 \times1 0^{6} M_{\odot}$$ | general_qa | 397 |
The following is a multiple choice question (with answers).
===Question
Which is not necessary to be satisfied for the reciprocal two-port network?
===Choices
$$
G_{12} = G_{21}
$$
$$
R_{12} = R_{21}
$$
$$
T_{12} = -T_{21}
$$
$$
H_{12} = -H_{21}
$$
$$
T_{12} = T_{21}
$$
$$
T_{12} = 3 T_{21}
$$
$$
T_{12} = \frac{3}{2} ... | $$
T_{12} = T_{21}
$$ | general_qa | 207 |
The following is a multiple choice question (with answers).
===Question
To prevent gas ignition and explosion in mines, blasting operations and explosive materials management must be strengthened. When conducting blasting at mining working faces, only approved explosives and electric detonators with valid product permi... | 130ms | general_qa | 123 |
The following is a multiple choice question (with answers).
===Question
Two batteries of emf ${E}_{1}$ and ${E}_{2}$ a capacitor of capacitance $C$ and resistor $R$ are connected in a circuit as shown. When the switch S is shifted from position (1) to (2), then the charge flow and work done by battery ${E}_{2}$ are
==... | $$\Delta W=C\left( { E }_{ 2 }-{ E }_{ 1 } \right) { E }_{ 2 }$$ | general_qa | 320 |
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