MCQOPTIONS
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MCQOPTIONS
This section includes 312 Mcqs, each offering curated multiple-choice questions to sharpen your Banking And Financial Awareness knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
A bimetallic strip consists of brass and iron. When it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because |
| A. | brass has a higher specific heat capacity than iron |
| B. | density of brass is more than that of iron |
| C. | it is easier to bend an iron strip than a brass strip of the same size |
| D. | brass has a higher coefficient of linear expansion than iron |
| Answer» E. | |
| 152. |
Heat travels through vacuum by |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | both [a] and [b] |
| Answer» D. both [a] and [b] | |
| 153. |
Which of the following represents convection? |
| A. | Land breeze |
| B. | Exhaust fan |
| C. | Heating water by keeping the vessel on a flame |
| D. | All of these |
| Answer» E. | |
| 154. |
The rate of flow of heat through a rod depends on: |
| A. | thermal conductivity of the rod. |
| B. | length of the rod. |
| C. | temperature difference across the rod. |
| D. | All of these |
| Answer» E. | |
| 155. |
Consider the following statements. [A] Some bodies may contract on heating [B] Water shows anamolous expansion. |
| A. | [A] is true and [B] is false |
| B. | [A] is false and [B] is true. |
| C. | Both [A] and [B] are true. |
| D. | Both [A] and [B] are false. |
| Answer» D. Both [A] and [B] are false. | |
| 156. |
If a liquid is heated in condition of weightlessness, the heat is transmitted through |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | None, because the liquid cannot be heated in weightlessness |
| Answer» B. convection | |
| 157. |
The bulb of one thermometer is spherical, while that of other is cylindrical. If both of them have equal amount of mercury, which thermometer will respond quickly to the temperature? |
| A. | spherical bulb |
| B. | cylindrical bulb |
| C. | elliptical bulb |
| D. | both [a] and [c] |
| Answer» C. elliptical bulb | |
| 158. |
Triple point is the temperature at which |
| A. | matter may simultaneously exist in liquid and gaseous state. |
| B. | matter may simultaneously exist in liquid and solid state. |
| C. | matter may simultaneously exist in solid and gaseous state. |
| D. | matter may simultaneously exist in all the three forms. |
| Answer» E. | |
| 159. |
At \[0{}^\circ C\]a body emits |
| A. | no radiation |
| B. | only visible light |
| C. | only microwave radiation |
| D. | all wavelengths. |
| Answer» E. | |
| 160. |
Two holes of unequal diameters \[{{d}_{1}}\] and \[{{d}_{2}}\]\[({{d}_{1}}>{{d}_{2}})\]are cut in a metal sheet. If the sheet is heated, |
| A. | both \[{{d}_{1}}\] and \[{{d}_{2}}\] will decrease |
| B. | both \[{{d}_{1}}\] and \[{{d}_{2}}\] will increase |
| C. | \[{{d}_{1}}\] will increase, \[{{d}_{2}}\] will decrease |
| D. | \[{{d}_{1}}\]will decrease, \[{{d}_{2}}\] will increase |
| Answer» C. \[{{d}_{1}}\] will increase, \[{{d}_{2}}\] will decrease | |
| 161. |
What temperature is the same on celsius scale as well as on Fahrenheit scale? |
| A. | \[-\,212{}^\circ C\] |
| B. | \[-\,40{}^\circ C\] |
| C. | \[-\,32{}^\circ C\] |
| D. | \[32{}^\circ C\] |
| Answer» C. \[-\,32{}^\circ C\] | |
| 162. |
Ventilators are provided at the top of room |
| A. | to bring oxygen for breathing |
| B. | so that sunlight may enter the room |
| C. | to maintain conventional currents to keep the air fresh in the room |
| D. | to provide an outlet for carbon dioxide |
| Answer» D. to provide an outlet for carbon dioxide | |
| 163. |
The temperature of a room is \[77{}^\circ F\]. What would it be on the Celsius scale? |
| A. | \[25{}^\circ C\] |
| B. | \[45{}^\circ C\] |
| C. | \[60{}^\circ C\] |
| D. | \[350{}^\circ C\] |
| Answer» B. \[45{}^\circ C\] | |
| 164. |
When a copper ball is heated, the largest percentage increase will occur in its |
| A. | diameter |
| B. | area |
| C. | volume |
| D. | density |
| Answer» D. density | |
| 165. |
Two spheres of same size are made of the same metal but one is hollow and the other is solid. They are heated to same temperature, then |
| A. | both spheres will expand equally |
| B. | hollow sphere will expand more than the solid one |
| C. | solid sphere will expand more than the hollow one |
| D. | None of the above |
| Answer» B. hollow sphere will expand more than the solid one | |
| 166. |
When vapour condenses into liquid |
| A. | it absorbs heat |
| B. | it liberates heat |
| C. | its temperature rises |
| D. | its temperature decreases |
| Answer» C. its temperature rises | |
| 167. |
A: At high altitude regions the cooking of food becomes difficult. B: Water boils at lower temperature when the pressure is low. |
| A. | Both A and B are wrong. |
| B. | A and B are correct and B is not the correct explanation of A |
| C. | A and B are correct and B is the correct explanation of A. |
| D. | A is correct but B is wrong. |
| Answer» D. A is correct but B is wrong. | |
| 168. |
When water is heated from \[0{}^\circ C\] to \[10{}^\circ C,\] its volume |
| A. | increases |
| B. | decreases |
| C. | does not change |
| D. | first decreases and then increases |
| Answer» E. | |
| 169. |
A metal sheet with a circular hole is heated. The hole |
| A. | gets larger |
| B. | gets smaller |
| C. | remains of the same size |
| D. | gets deformed |
| Answer» B. gets smaller | |
| 170. |
Food in the pressure cooker is cooked faster, as |
| A. | the boiling point increases due to an increase in pressure |
| B. | the boiling point decreases due to an increase in pressure |
| C. | more steam is available at \[100{}^\circ C\] |
| D. | more pressure is available at \[100{}^\circ C\] |
| Answer» B. the boiling point decreases due to an increase in pressure | |
| 171. |
Gases exert pressure on the walls of the container because the gas molecules |
| A. | possess momentum |
| B. | collide with each other |
| C. | have finite volume |
| D. | obey gas laws |
| Answer» B. collide with each other | |
| 172. |
Air conditioner is based on the principle of |
| A. | Carnot cycle |
| B. | refrigerator |
| C. | first low of thermodynamics |
| D. | None of these |
| Answer» C. first low of thermodynamics | |
| 173. |
Consider two identical iron spheres, one which lie on a thermally insulating plate, while the other hangs from an insulatory thread. Equal amount of heat is supplied to the two spheres |
| A. | Temperature of A will be greater than B |
| B. | Temperature of B will be greater than A |
| C. | Their temperature will be equal |
| D. | Can't be predicted |
| Answer» C. Their temperature will be equal | |
| 174. |
At a given temperature the internal energy of a substance |
| A. | in liquid state is equal to that in gaseous state |
| B. | in liquid state is less than that in gaseous state |
| C. | in liquid state is more than that in gaseous state |
| D. | is equal for the three states of matter |
| Answer» C. in liquid state is more than that in gaseous state | |
| 175. |
A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature \[120{}^\circ C,\] then |
| A. | both the cube and the sphere cool down at the same rate |
| B. | the cube cools down faster than the sphere |
| C. | the sphere cools down faster than the cube |
| D. | whichever is having more mass will cool down faster |
| Answer» C. the sphere cools down faster than the cube | |
| 176. |
Which of the following is not close to a black body? |
| A. | Black board paint |
| B. | Green leaves |
| C. | Black holes |
| D. | Red roses |
| Answer» B. Green leaves | |
| 177. |
The sprinkling of water slightly reduces the temperature of a closed room because |
| A. | temperature of water is less than that of the room |
| B. | specific heat of water is high |
| C. | water has large latent heat of vaporization |
| D. | water is a bad conductor of heat |
| Answer» D. water is a bad conductor of heat | |
| 178. |
The wavelength of radiation emitted by a body depends upon |
| A. | the nature of its surface |
| B. | the area of its surface |
| C. | the temperature of its surface |
| D. | All of the above |
| Answer» E. | |
| 179. |
The fastest mode of transfer of heat is |
| A. | conduction |
| B. | convection |
| C. | radiation |
| D. | None of these |
| Answer» D. None of these | |
| 180. |
According to the kinetic theory of gases |
| A. | all the atoms move horizontally with equal speeds |
| B. | an atom moves faster during its downward motion than its upward motion |
| C. | at any instant one-third of the total atoms are moving along x-axis |
| D. | None of these |
| Answer» D. None of these | |
| 181. |
Which of the following qualities suit for a cooking utensil? |
| A. | High specific heat and low thermal conductivity |
| B. | High specific heat and high thermal conductivity |
| C. | Low specific heat and low thermal conductivity |
| D. | Low specific heat and high thermal conductivity |
| Answer» E. | |
| 182. |
Good absorbers of heat are |
| A. | poor emitters |
| B. | non-emitters |
| C. | good emitters |
| D. | highly polished |
| Answer» D. highly polished | |
| 183. |
Water has maximum density at |
| A. | \[0{}^\circ C\] |
| B. | \[32{}^\circ F\] |
| C. | \[-\,4{}^\circ C\] |
| D. | \[4{}^\circ C\] |
| Answer» E. | |
| 184. |
Woolen clothes are used in winter season because woolen clothes |
| A. | are good sources for producing heat |
| B. | absorb heat form surroundings |
| C. | are bad conductors of heat |
| D. | provide heat to body continuously |
| Answer» D. provide heat to body continuously | |
| 185. |
An AC generator of 220V having internal resistance r =\[10\Omega \] and external resistance R =\[100\Omega \]. What is the power developed in the external circuit? |
| A. | 484 W |
| B. | 400 W |
| C. | 441 W |
| D. | 369 W |
| Answer» C. 441 W | |
| 186. |
For dynamo which one of the following statements is correct? |
| A. | It converts the electrical energy into light energy |
| B. | It converts the kinetic energy into heat energy |
| C. | It converts the mechanical energy into electrical energy |
| D. | It converts the electrical energy into mechanical energy |
| Answer» D. It converts the electrical energy into mechanical energy | |
| 187. |
The current in the armature of a motor is reversed at every half cycle due to the action of a (n) |
| A. | armature |
| B. | field coil |
| C. | brush |
| D. | commutator |
| Answer» E. | |
| 188. |
Eddy currents are produced when |
| A. | a metal is kept in varying magnetic field |
| B. | a metal is kept in steady magnetic field |
| C. | a circular coil is placed in a magnetic field |
| D. | through a circular coil, current is passed |
| Answer» B. a metal is kept in steady magnetic field | |
| 189. |
Alternating current is converted to direct current by |
| A. | rectifier |
| B. | dynamo |
| C. | transformer |
| D. | motor |
| Answer» B. dynamo | |
| 190. |
Whenever, current is changed in a coil, an induced e.m.f. is produced in the same coil. This property of the coil is due to |
| A. | mutual induction |
| B. | self-induction |
| C. | eddy currents |
| D. | hysteresis |
| Answer» C. eddy currents | |
| 191. |
The laws of electromagnetic induction have been used in the construction of a |
| A. | galvanometer |
| B. | voltmeter |
| C. | electric motor |
| D. | generator |
| Answer» E. | |
| 192. |
Lenz's law is a consequence of the law of conservation of |
| A. | charge |
| B. | mass |
| C. | energy |
| D. | momentum |
| Answer» D. momentum | |
| 193. |
Faraday's laws are consequence of conservation of |
| A. | energy |
| B. | energy and magnetic field |
| C. | charge |
| D. | magnetic field |
| Answer» B. energy and magnetic field | |
| 194. |
The heating element of an electric heater should be made with a material, which should have |
| A. | high specific resistance and high melting point |
| B. | high specific resistance and low melting point |
| C. | low specific resistance and low melting point |
| D. | low specific resistance and high melting point |
| Answer» B. high specific resistance and low melting point | |
| 195. |
What should be the characteristic of fuse wire? |
| A. | High melting point, high specific resistance |
| B. | Low melting point, low specific resistance |
| C. | High melting point, low specific resistance |
| D. | Low melting point, high specific resistance |
| Answer» E. | |
| 196. |
A voltmeter essentially consists of |
| A. | a high resistance, in series with a galvanometer |
| B. | a low resistance, in series with a galvanometer |
| C. | a high resistance in parallel with a galvanometer |
| D. | a low resistance in parallel with a galvanometer |
| Answer» B. a low resistance, in series with a galvanometer | |
| 197. |
Which one of the following heater element is used in electric press? |
| A. | Copper wire |
| B. | Nichrome wire |
| C. | Lead wire |
| D. | Iron wire |
| Answer» B. Nichrome wire | |
| 198. |
The filament of an electric bulb is of tungsten because |
| A. | its resistance is negligible |
| B. | it is cheaper |
| C. | its melting point is high |
| D. | filament is easily made |
| Answer» D. filament is easily made | |
| 199. |
Which is not a device based on the heating effect of electricity? |
| A. | Heater |
| B. | Toaster |
| C. | Refrigerator |
| D. | Press |
| Answer» C. Refrigerator | |
| 200. |
Fuse wire is made of |
| A. | platinum |
| B. | copper |
| C. | aluminum |
| D. | alloy of tin and lead |
| Answer» D. alloy of tin and lead | |