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.
| 301. |
Stars are held together by |
| A. | Gravitational forces |
| B. | Electrical forces |
| C. | Ionic forces |
| D. | Magnetic forces |
| Answer» B. Electrical forces | |
| 302. |
Speed of light is maximum in _____. |
| A. | vacuum |
| B. | solids |
| C. | liquids |
| D. | gases |
| Answer» B. solids | |
| 303. |
Sound waves cannot travel in |
| A. | Vacuum |
| B. | Water |
| C. | Glass |
| D. | Hydrogen gas |
| Answer» B. Water | |
| 304. |
Sources of geothermal power are |
| A. | water |
| B. | earth's heat |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 305. |
Sound travels fastest in |
| A. | Vacuum |
| B. | Air |
| C. | Glass |
| D. | Water |
| Answer» D. Water | |
| 306. |
Sound waves can not travel through a_x005F_x000D_ |
| A. | copper wire placed in air |
| B. | silver slab placed in air |
| C. | glass prism placed in water |
| D. | wooden hollow pipe placed in vacuum |
| Answer» E. | |
| 307. |
Sound waves cannot travel through |
| A. | Gas |
| B. | Liquid |
| C. | Vacuum |
| D. | Solid |
| Answer» D. Solid | |
| 308. |
Sound following a flash of lightning is called |
| A. | Stoning |
| B. | Bolting |
| C. | Thunder |
| D. | Cloud clash |
| Answer» D. Cloud clash | |
| 309. |
Sound is produced by _____________ objects._x005F_x000D_ |
| A. | perpetual |
| B. | uniform |
| C. | stable |
| D. | vibrating |
| Answer» E. | |
| 310. |
Sound is a |
| A. | Electromagnetic wave |
| B. | Surface wave |
| C. | Mechanical wave |
| D. | Tidal wave |
| Answer» D. Tidal wave | |
| 311. |
Sound travels at a speed of 333 m/s in the air, thus, in 1 s, a distance of 333 m is travelled by |
| A. | source |
| B. | disturbace |
| C. | particles |
| D. | receiver |
| Answer» C. particles | |
| 312. |
Sound is a form of ____________ which produces a sensation of hearing in our ears. |
| A. | power |
| B. | energy |
| C. | force |
| D. | momentum |
| Answer» C. force | |
| 313. |
Solids have definite shapes.This is because |
| A. | the forces of cohesion of the molecules within are very much less in them |
| B. | the forces of cohesion are very large |
| C. | the forces of adhesion are large |
| D. | the forces of adhesion are less |
| Answer» C. the forces of adhesion are large | |
| 314. |
Soap bubble attains spherical shape due to ______. |
| A. | inertia |
| B. | pressure |
| C. | surface tension |
| D. | Viscosity |
| Answer» D. Viscosity | |
| 315. |
Sound CANNOT travel through |
| A. | Air |
| B. | Vacuum |
| C. | Liquid |
| D. | Solid |
| Answer» C. Liquid | |
| 316. |
Sound becomes hazardous noise pollution at decibels? |
| A. | above 120 db |
| B. | above 80 db |
| C. | above 50 db |
| D. | above 30 db |
| Answer» B. above 80 db | |
| 317. |
Sound can not travel in which of the following medium? |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | Vacuum |
| Answer» E. | |
| 318. |
Skids occur when the brakes are applied so hard that the front or rear wheels lose traction are called as |
| A. | Cornering |
| B. | BLowout |
| C. | Power |
| D. | Braking |
| Answer» E. | |
| 319. |
Siphon will fail to work if |
| A. | The level of the liquid in the two vessels are at the same height |
| B. | The temperature of the liquids in the two vessels are the same |
| C. | The densities of the liquid in the two vessels are equal |
| D. | Both its limbs are of unequal length |
| Answer» B. The temperature of the liquids in the two vessels are the same | |
| 320. |
Skating on ice is possible because |
| A. | the surface of ice is smooth |
| B. | ice is cold |
| C. | the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water |
| D. | the pressure on the ice due to skate raises its melting point |
| Answer» D. the pressure on the ice due to skate raises its melting point | |
| 321. |
SI unit of temperature is |
| A. | Kelvin |
| B. | Celsius |
| C. | Fahrenheit |
| D. | Joule |
| Answer» B. Celsius | |
| 322. |
SI unit of Luminious intensity is |
| A. | Lumen |
| B. | Lux |
| C. | Candela |
| D. | Watt |
| Answer» D. Watt | |
| 323. |
Sextant is an instrument used in which of the following ? |
| A. | Gynaecology |
| B. | Navigation |
| C. | Birth control |
| D. | Medical treatment |
| Answer» C. Birth control | |
| 324. |
Sensitivity of potentiometer can be increased by |
| A. | increasing the length of the potentiometer wire |
| B. | increasing the e.m.f of the cell |
| C. | decreasing the length of the potentiometer wire |
| D. | none of these |
| Answer» B. increasing the e.m.f of the cell | |
| 325. |
Seismic waves are recorded by an instrument called the ________________._x005F_x000D_ |
| A. | seismograph |
| B. | odograph |
| C. | isograph |
| D. | lithograph |
| Answer» B. odograph | |
| 326. |
Rotameter is used to measure |
| A. | Vortex flow |
| B. | Density of fluids |
| C. | Velocity of fluid in pipes |
| D. | Flow of fluids |
| Answer» E. | |
| 327. |
Rolling friction is caused by ____ from the following? |
| A. | Non-elastic effects |
| B. | Gravity |
| C. | Power dissipation |
| D. | Buoyancy |
| Answer» B. Gravity | |
| 328. |
Second and third class levers are differentiated by |
| A. | the location of the load |
| B. | the location of the fulcrum |
| C. | the presence of multiple loads |
| D. | the type of fulcrum present |
| Answer» B. the location of the fulcrum | |
| 329. |
Scientists have created world’s shortest ______ laser pulse with a duration of just 43 attoseconds._x005F_x000D_ |
| A. | Gamma ray |
| B. | Alpha ray |
| C. | Beta ray |
| D. | X-ray |
| Answer» E. | |
| 330. |
Scalar Quantities are |
| A. | physical quantities which have magnitude only and no direction |
| B. | physical quantities which have no magnitude only and only direction |
| C. | physical quantities which have magnitude only and direction |
| D. | physical quantities which have no magnitude and no direction |
| Answer» B. physical quantities which have no magnitude only and only direction | |
| 331. |
Rocket works on the principle of conservation of_x005F_x000D_ |
| A. | Momentum |
| B. | Mass |
| C. | Velocity |
| D. | Energy |
| Answer» B. Mass | |
| 332. |
Refractive Index of glass with respect to water is |
| A. | 44259 |
| B. | 44417 |
| C. | 44257 |
| D. | 44447 |
| Answer» E. | |
| 333. |
Reflection from a smooth surface like that of a mirror is called ___________ reflection. |
| A. | regular |
| B. | irregular |
| C. | diffused |
| D. | fused |
| Answer» B. irregular | |
| 334. |
Resistance of human body in dry condition |
| A. | 10 ohm |
| B. | 1000 ohm |
| C. | 10000 ohm |
| D. | 100000 ohm |
| Answer» E. | |
| 335. |
Resistance switching is normally employed in |
| A. | Bulk oil breakers |
| B. | All breakers |
| C. | Air blast circuit breakers |
| D. | Minimum oil breakers |
| Answer» D. Minimum oil breakers | |
| 336. |
Rectifiers convert _____. |
| A. | high voltage to low voltage |
| B. | low voltage to high voltage |
| C. | AC to DC |
| D. | DC to AC |
| Answer» D. DC to AC | |
| 337. |
Rate of doing work is called |
| A. | Capacity |
| B. | Energy |
| C. | Power |
| D. | Current |
| Answer» D. Current | |
| 338. |
Rate of work done is _______. |
| A. | Energy |
| B. | Power |
| C. | Momentum |
| D. | Impulse |
| Answer» C. Momentum | |
| 339. |
Rear view mirror of car is convex or concave? |
| A. | Convex |
| B. | Concave |
| C. | Both A & B |
| D. | Can't be determined |
| Answer» B. Concave | |
| 340. |
Rate of change of momentum is |
| A. | Area |
| B. | Pressure |
| C. | Force |
| D. | Velocity |
| Answer» D. Velocity | |
| 341. |
Rate at which velocity changes over time? |
| A. | Speed |
| B. | Displacement |
| C. | Acceleration |
| D. | Jerk |
| Answer» D. Jerk | |
| 342. |
Rain drops acquire spherical shape due to |
| A. | viscosity |
| B. | surface tension |
| C. | friction |
| D. | elasticity |
| Answer» C. friction | |
| 343. |
Rate of change of displacement is known as ............ |
| A. | Acceleration |
| B. | Velocity |
| C. | Speed |
| D. | Distance |
| Answer» C. Speed | |
| 344. |
Radon is formed in the alpha decay of _______._x005F_x000D_ |
| A. | radium |
| B. | uranium |
| C. | actinium |
| D. | thorium |
| Answer» B. uranium | |
| 345. |
Radio waves sent out by a radio stations are reflected by |
| A. | troposphere |
| B. | stratosphere |
| C. | mesosphere |
| D. | ionosphere |
| Answer» E. | |
| 346. |
Radian is used to measure |
| A. | Temperature |
| B. | Intensity of Flame |
| C. | Angle |
| D. | Solid Angle |
| Answer» D. Solid Angle | |
| 347. |
RADAR is used for |
| A. | detecting and locating the position of objects such as Aeroplanes |
| B. | locating submerged submarines |
| C. | locating geostationary satellites |
| D. | receiving a signals in a radio receiver |
| Answer» B. locating submerged submarines | |
| 348. |
Quality of transmission depends upon |
| A. | Nature of signal only |
| B. | Nature of medium only |
| C. | Both (A) and (B) |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 349. |
Propagation of sound can be visualised as propagation of _____________ variations in the medium. |
| A. | energy |
| B. | power |
| C. | force |
| D. | pressure |
| Answer» E. | |
| 350. |
Propagation of sound can be visualised as propagation of ____________ variations in the medium |
| A. | elasticity |
| B. | viscosity |
| C. | density |
| D. | porosity |
| Answer» D. porosity | |