MCQOPTIONS
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MCQOPTIONS
This section includes 1292 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
Which color has the highest energy? |
| A. | Violet |
| B. | Red |
| C. | Blue |
| D. | White |
| Answer» B. Red | |
| 1152. |
Which bulb operates on lowest power? |
| A. | Night bulb |
| B. | Torch bulb |
| C. | Neon bulb |
| D. | GLS bulb |
| Answer» C. Neon bulb | |
| 1153. |
Which best describes how air moves during convection? |
| A. | cool air falls down |
| B. | warm air falls down |
| C. | cool air is replaced by warm air |
| D. | air always falls down |
| Answer» B. warm air falls down | |
| 1154. |
Which among the following temperature scale is based upon absolute zero? |
| A. | Rankine |
| B. | Celsius |
| C. | Fahrenheit |
| D. | Kelvin |
| Answer» E. | |
| 1155. |
Which among the following is not an environment friendly mode of producing electricity? |
| A. | Thermal Power |
| B. | Solar Power |
| C. | Wind Energy |
| D. | Bio-waste |
| Answer» B. Solar Power | |
| 1156. |
Which among the following is not a unit of distance? |
| A. | Light year |
| B. | Longsec |
| C. | Astronomical unit |
| D. | Parsec |
| Answer» C. Astronomical unit | |
| 1157. |
Which among the following is false about displacement? |
| A. | It can be positive, negative or zero |
| B. | Displacement is never greater than Distance |
| C. | Its SI unit is meter |
| D. | It is always positive |
| Answer» E. | |
| 1158. |
Which among the following determines the pitch of a sound? |
| A. | Amplitude |
| B. | Frequency |
| C. | Loudness |
| D. | Wavelength |
| Answer» C. Loudness | |
| 1159. |
Which among the following is a vector quantity? |
| A. | Heat |
| B. | Angular momentum |
| C. | Work |
| D. | Time |
| Answer» C. Work | |
| 1160. |
Where does hydroelectric energy come from? |
| A. | Air |
| B. | Water |
| C. | Solar |
| D. | All of the above |
| Answer» C. Solar | |
| 1161. |
Which alternative energy source is exhaustible? |
| A. | tidal energy |
| B. | wind energy |
| C. | solar energy |
| D. | geothermal energy |
| Answer» E. | |
| 1162. |
Where should a boat compass be mounted? |
| A. | near magnet |
| B. | near iron |
| C. | away from electrical wiring |
| D. | All the above |
| Answer» D. All the above | |
| 1163. |
Where is a transistor most likely to be found ? |
| A. | Wrist watch |
| B. | Fuse |
| C. | Hearing aid |
| D. | Fluorescent lamp |
| Answer» D. Fluorescent lamp | |
| 1164. |
Where warm air rises up, the air ____._x005F_x000D_ |
| A. | pressure at that place is lowered |
| B. | pressure at that place is raised |
| C. | humidity at that place is lowered |
| D. | humidity at that place is raised |
| Answer» B. pressure at that place is raised | |
| 1165. |
When the vibrating object moves forward, it creates a region of high pressure in the medium called ______. |
| A. | dilation |
| B. | compression |
| C. | relaxation |
| D. | negation |
| Answer» C. relaxation | |
| 1166. |
When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is |
| A. | the violet ray |
| B. | the red ray |
| C. | the green ray |
| D. | the blue ray |
| Answer» C. the green ray | |
| 1167. |
When two equal forces are acting on a body and opposite in direction, the net force acting on the body  becomes .........._x005F_x000D_ |
| A. | three-times |
| B. | two-times |
| C. | zero |
| D. | four-times |
| Answer» D. four-times | |
| 1168. |
When two similar sources vibrate with slightly different frequencies , a regular rise and fall occurs in the loudness of tone. This phenomenon is known as |
| A. | doppler effect |
| B. | beats |
| C. | resonance |
| D. | echo |
| Answer» C. resonance | |
| 1169. |
When we see an object, the image formed on the retina is ________ |
| A. | Real and inverted |
| B. | Real and erect |
| C. | Virtual and erect |
| D. | Virtual and inverted |
| Answer» B. Real and erect | |
| 1170. |
When the car takes a bend, the force that pushes us to the outside of the curve is the |
| A. | Centripetal Force |
| B. | Centrifugal Force |
| C. | Frictional Force |
| D. | Tension Force |
| Answer» C. Frictional Force | |
| 1171. |
When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible forth is observation is |
| A. | reflection of light |
| B. | refraction of light |
| C. | dispersion of light |
| D. | scattering of light |
| Answer» E. | |
| 1172. |
When one enters a dark room after being in bright light one is not able to see anything clearly for a while because |
| A. | the retina of the eye moves forward |
| B. | the retina of the eye moves backward |
| C. | the iris is unable to dilate the pupil immediately to be able to see things |
| D. | the eye has no power of accommodation |
| Answer» D. the eye has no power of accommodation | |
| 1173. |
When net torque is zero, __________ will be constant. |
| A. | force |
| B. | angular momentum |
| C. | linear momentum |
| D. | acceleration |
| Answer» C. linear momentum | |
| 1174. |
When ice floats on water, its _____ part remains outside the water. |
| A. | 0.5 |
| B. | 0.3 |
| C. | 0.1 |
| D. | 1 |
| Answer» D. 1 | |
| 1175. |
When does land breeze occur? |
| A. | Fall |
| B. | Winter |
| C. | Both A & B |
| D. | Hot summer |
| Answer» D. Hot summer | |
| 1176. |
When light enters from air to water, then its |
| A. | frequency increases and speed decreases |
| B. | frequency is same but the wavelength is smaller in water than in air |
| C. | frequency is same but the wavelength is larger in water than in air |
| D. | frequency and speed both decreases |
| Answer» C. frequency is same but the wavelength is larger in water than in air | |
| 1177. |
When light passes from one medium to another, this phenomenon of change in its direction is called _____. |
| A. | Refraction |
| B. | Diffraction |
| C. | Propagation |
| D. | No option is correct |
| Answer» B. Diffraction | |
| 1178. |
When body is accelerated |
| A. | its velocity never changes |
| B. | its speed always changes |
| C. | its direction always changes |
| D. | its speed may or maynot change |
| Answer» E. | |
| 1179. |
When an object is thrown vertically upwards, at its maximum height its _____________._x005F_x000D_ |
| A. | potential energy is zero |
| B. | momentum is maximum |
| C. | kinetic energy is zero |
| D. | gravitational force is maximum |
| Answer» D. gravitational force is maximum | |
| 1180. |
When an object travels equal distances in equal intervals of time, it moves with ______________ speed._x005F_x000D_ |
| A. | linear |
| B. | translational |
| C. | uniform |
| D. | non-uniform |
| Answer» D. non-uniform | |
| 1181. |
When an unbalanced force acts on an object |
| A. | causes change in motion of the object |
| B. | the speed & direction of the object will change |
| C. | causes the object to move |
| D. | All of the above |
| Answer» E. | |
| 1182. |
When body is accelerated-- |
| A. | Its velocity never changes. |
| B. | Its speed will always change. |
| C. | Its direction always changes. |
| D. | Its speed may or may not change. |
| Answer» E. | |
| 1183. |
When an electric bulb breaks , there is an explosive sound. That is due to |
| A. | the chemical reaction between the gases inside the bulb |
| B. | the compressed gases inside rushing out suddenly |
| C. | the air outside rushing in to fill the vacuum inside the bulb |
| D. | None of these |
| Answer» D. None of these | |
| 1184. |
When a ray of light travels from a denser medium to a rarer medium, it bends |
| A. | towards the normal and speeds up |
| B. | towards the normal and slows down |
| C. | away from the normal and speeds up |
| D. | away from the normal and slows down |
| Answer» D. away from the normal and slows down | |
| 1185. |
When a running car stops suddenly, the passengers tends to lean forward because of |
| A. | Gravitational force |
| B. | Inertia of motion |
| C. | Law of conservation of mass |
| D. | Both B & C |
| Answer» C. Law of conservation of mass | |
| 1186. |
When a steel ball is placed on the surface of mercury, it does not sink because |
| A. | of the surface tension of mercury |
| B. | mercury is a semisolid |
| C. | of the high viscosity of mercury |
| D. | the density of mercury is greater than that of steel |
| Answer» E. | |
| 1187. |
when an atom loses an electron it becomes |
| A. | neutron |
| B. | negative ion |
| C. | positive ion |
| D. | none of the above |
| Answer» D. none of the above | |
| 1188. |
When a ray of light is  refracted by a prism such that the angle of deviation is minimum then |
| A. | the angle of emergence is equal to the angle of incidence |
| B. | the angle of emergence is greater than the angle of incidence |
| C. | the angle of emergence is smaller than the angle of incidence |
| D. | the sum of the angle of incidence and the angle of emergence is equal to 90 degrees |
| Answer» B. the angle of emergence is greater than the angle of incidence | |
| 1189. |
When a number of resistance are connected in ___, their combined resistance is less than the smallest individual resistance._x005F_x000D_ |
| A. | parallel |
| B. | horizontal |
| C. | series |
| D. | box |
| Answer» B. horizontal | |
| 1190. |
When a force of 10 N acts on a body of mass of 10 kg that is able to move freely, which of the following statements will apply? |
| A. | The body moves with an acceleration of 10 m/s2 |
| B. | The body moves with a speed of 1 km/s |
| C. | The body moves with a speed of 1 m/s |
| D. | The body moves with an acceleration of 1 m/s2 |
| Answer» E. | |
| 1191. |
When a number of resistors are connected in series in a circuit, the value of current: |
| A. | increases |
| B. | becomes half |
| C. | decreases |
| D. | remains the same |
| Answer» E. | |
| 1192. |
When a piece of pure silicon is doped with aluminium, then |
| A. | the conductivity of the doped silicon piece will remain the same |
| B. | the doped silicon piece will become n-type |
| C. | the doped silicon piece will become p-type |
| D. | the resistivity of the doped silicon piece will increase |
| Answer» D. the resistivity of the doped silicon piece will increase | |
| 1193. |
When a constant force acts on an object with a mass of 8 kg for a duration of 3 s. it increases the object's velocity from 4 m/s to 6 m/s . What is the magnitude of the applied force? |
| A. | 5.33 N |
| B. | 4.33 N |
| C. | 6.33 N |
| D. | 3.33 N |
| Answer» B. 4.33 N | |
| 1194. |
"When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler". |
| A. | Law of conservation of energy |
| B. | Newton's third law of motion |
| C. | Law of Inertia |
| D. | Law of conservation of momentum |
| Answer» D. Law of conservation of momentum | |
| 1195. |
When a compressed slinky is released it converts potential energy into |
| A. | Heat energy |
| B. | Mechanical energy |
| C. | Chemical energy |
| D. | Kinetic energy |
| Answer» E. | |
| 1196. |
When a bullet is fired from a gun, the gun moves in the opposite direction. This illustrates Newton's |
| A. | third law of motion |
| B. | first and second law of motion |
| C. | first law of motion |
| D. | second law of motion |
| Answer» B. first and second law of motion | |
| 1197. |
When a bullet is fired from a gun, its potential energy is converted into |
| A. | chemical energy |
| B. | mechanical energy |
| C. | heat energy |
| D. | kinetic energy |
| Answer» E. | |
| 1198. |
When a bullet is fired from a gun |
| A. | the gun moves forward |
| B. | the gun jumps up |
| C. | the gun does not move |
| D. | the gun recoils with the same momentum as the bullet |
| Answer» E. | |
| 1199. |
What will be the value of the kinetic energy (Ek) of a moving body with mass m, if its speed is doubled from v to 2v? |
| A. | 1/2 Ek |
| B. | 4 Ek |
| C. | There will be no change in Ek |
| D. | 2 Ek |
| Answer» C. There will be no change in Ek | |
| 1200. |
When a ball is thrown vertically upwards, which of the following quantities remains constant during its motion? |
| A. | Energy |
| B. | Displacement |
| C. | Velocity |
| D. | Acceleration |
| Answer» B. Displacement | |