MCQOPTIONS
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MCQOPTIONS
This section includes 563 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Natural radioactivity was discovered by - |
| A. | Marie Curie |
| B. | Ernest Rutherfor |
| C. | Henri Becquerel |
| D. | Enrico Fermi |
| Answer» D. Enrico Fermi | |
| 402. |
Condensation process refers to : |
| A. | Conversion of water into water vapour |
| B. | Conversion of water vapour into solid form |
| C. | Conversion of water into solid form |
| D. | Conversion of water vapour into its liquid form |
| Answer» E. | |
| 403. |
The term Higgs Boson is associated with - |
| A. | Nano Technology |
| B. | Oncology |
| C. | God Particle |
| D. | Stem Cell Research |
| Answer» D. Stem Cell Research | |
| 404. |
Mirage' is an example of - |
| A. | Refraction of light only |
| B. | Total internal reflection of light only |
| C. | Refraction and total internal reflection of light |
| D. | Dispersion of light only |
| Answer» D. Dispersion of light only | |
| 405. |
The unit of noise pollution (level) is |
| A. | decibel |
| B. | decimal |
| C. | ppm |
| D. | None of these |
| Answer» B. decimal | |
| 406. |
The phenomenon of radioactivity was discovered by - |
| A. | Marie Curie |
| B. | Pierre Curie |
| C. | Henri Becquerel |
| D. | J.J. Thomson |
| Answer» D. J.J. Thomson | |
| 407. |
Which of the following is a result of Surface tension? |
| A. | Gravitational pull |
| B. | Viscosity |
| C. | Capillary action |
| D. | Radiation |
| Answer» D. Radiation | |
| 408. |
Which instrument is used to record the speed of a vehicle? |
| A. | Thermometer |
| B. | Barometer |
| C. | Speedometer |
| D. | Oscilloscope |
| Answer» D. Oscilloscope | |
| 409. |
An aircraft can perform aerobatic manoeuvres in a vertical loop because of- |
| A. | gravity |
| B. | centripetal force |
| C. | weight |
| D. | centrifugal force |
| Answer» B. centripetal force | |
| 410. |
What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as? |
| A. | Hubble telescope |
| B. | Kepler telescope |
| C. | Copernicus telescope |
| D. | Newton telescope |
| Answer» B. Kepler telescope | |
| 411. |
The natural environment refers to - |
| A. | The living organisms and non-living objects or factors in an area undisturbed by human activity |
| B. | The atmosphere in a forest |
| C. | The plants and animals in a forest |
| D. | The atmosphere of an area-a forest, lake or an ocean |
| Answer» B. The atmosphere in a forest | |
| 412. |
The Newton's First Law is also called as |
| A. | Law of moments |
| B. | Law of inertia |
| C. | Law of energy |
| D. | Law of momentum |
| Answer» C. Law of energy | |
| 413. |
Newton's first law is also known as . |
| A. | Law of Friction |
| B. | Law of Momentum |
| C. | Law of Inertia |
| D. | Law of Motion |
| Answer» D. Law of Motion | |
| 414. |
Earth is also known as |
| A. | Black planet |
| B. | Green planet |
| C. | Blue planet |
| D. | Yellow planet |
| Answer» D. Yellow planet | |
| 415. |
Light year is a unit of - |
| A. | time |
| B. | distance |
| C. | light |
| D. | intensity of light |
| Answer» C. light | |
| 416. |
The smallest unit of classification is - |
| A. | Species |
| B. | Genus |
| C. | Family |
| D. | Order |
| Answer» B. Genus | |
| 417. |
Radiocarbon dating technique is used to estimate the age of - |
| A. | rocks |
| B. | monuments |
| C. | soil |
| D. | fossils |
| Answer» E. | |
| 418. |
Radian per second is unit of . |
| A. | Momentum |
| B. | Moment of Inertia |
| C. | Frequency |
| D. | Angle Velocity |
| Answer» E. | |
| 419. |
SI unit for the surface tension is . |
| A. | kg/m2 |
| B. | kg/m3 |
| C. | N/m |
| D. | kg/m |
| Answer» D. kg/m | |
| 420. |
Flemings right hand rule is used to find the direction of the |
| A. | Alternate current |
| B. | Direct current |
| C. | Induced current |
| D. | Actual current |
| Answer» D. Actual current | |
| 421. |
Change in quality of environment that can be harmful and unpleasant for living things is called |
| A. | Energy |
| B. | Pollution |
| C. | Revolution |
| D. | Transformation |
| Answer» C. Revolution | |
| 422. |
Which instrument is used to measure altitudes in aircraft s? |
| A. | Audiometer |
| B. | Ammeter |
| C. | Altimeter |
| D. | Anemometer |
| Answer» D. Anemometer | |
| 423. |
If electric resistance is to be decreased, then the number of resistances should be connected in |
| A. | Series |
| B. | Parallel |
| C. | Mixed arrangement |
| D. | None of these |
| Answer» C. Mixed arrangement | |
| 424. |
The SI unit of luminous emittance is - |
| A. | Lux |
| B. | Candela |
| C. | Lumen |
| D. | Lumen second |
| Answer» B. Candela | |
| 425. |
Lux is the SI unit of - |
| A. | intensity of illumination |
| B. | luminous efficiency |
| C. | luminous flux |
| D. | luminous intensity |
| Answer» B. luminous efficiency | |
| 426. |
Radian is used to measure - |
| A. | Temperature |
| B. | Intensity of Flame |
| C. | Angle |
| D. | Solid Angle |
| Answer» D. Solid Angle | |
| 427. |
The ozone layer in the atmosphere is at a height of about . |
| A. | 25 km |
| B. | 50 km |
| C. | 100 km |
| D. | 200 km |
| Answer» C. 100 km | |
| 428. |
The technique used by bats to find their way or to locate food is . |
| A. | SONAR |
| B. | RADAR |
| C. | Echolocation |
| D. | Flapping |
| Answer» D. Flapping | |
| 429. |
A force may change of an object. |
| A. | speed |
| B. | direction |
| C. | shape |
| D. | All options are correct |
| Answer» E. | |
| 430. |
The rate of change of displacement is called: |
| A. | Acceleration |
| B. | Speed |
| C. | Distance |
| D. | Velocity |
| Answer» E. | |
| 431. |
An object is in static equilibrium when it is . |
| A. | at rest |
| B. | moving in a circular path |
| C. | moving with uniform velocity |
| D. | accelerating at high speed |
| Answer» B. moving in a circular path | |
| 432. |
Decibel is the unit of . |
| A. | Speed of light |
| B. | Intensity of sound |
| C. | Intensity of heat |
| D. | None of these |
| Answer» C. Intensity of heat | |
| 433. |
Why is it difficult to breathe at higher altitudes? |
| A. | Due to low air pressure |
| B. | Due to low temperature |
| C. | Due to ozone |
| D. | Due to high humidity |
| Answer» B. Due to low temperature | |
| 434. |
Melting point of ice . |
| A. | increases with increase of pressure |
| B. | decreases with increase of pressure |
| C. | is independent of pressure |
| D. | None of these |
| Answer» C. is independent of pressure | |
| 435. |
SI unit of luminous intensity is . |
| A. | lumen |
| B. | lux |
| C. | candela |
| D. | watt |
| Answer» D. watt | |
| 436. |
Intensity of sound has - |
| A. | an object existence |
| B. | a subject existence |
| C. | no existence |
| D. | both subjective and objective existence |
| Answer» B. a subject existence | |
| 437. |
The intensity ratio of waves is 25:9. What is the ratio of their amplitudes? |
| A. | 50 : 18 |
| B. | 25 : 9 |
| C. | 3 : 5 |
| D. | 5 : 3 |
| Answer» E. | |
| 438. |
The atmospheric air is held to the Earth by |
| A. | gravity |
| B. | winds |
| C. | clouds |
| D. | rotation of the Earth |
| Answer» B. winds | |
| 439. |
Rate of change of momentum is - |
| A. | Area |
| B. | Pressure |
| C. | Force |
| D. | Velocity |
| Answer» D. Velocity | |
| 440. |
Which of the following is not caused by atmospheric refraction of light? |
| A. | Sun appearing red at sunset |
| B. | Twinkling of stars at night |
| C. | Sun appearing higher in the sky than it actually is |
| D. | Sun becoming visible two or three minutes before actual sunrise |
| Answer» D. Sun becoming visible two or three minutes before actual sunrise | |
| 441. |
The direction of heat flow between two objects depends on - |
| A. | Their masses |
| B. | Their heat contents |
| C. | Their temperatures |
| D. | Whether they are in solid, liquid or gaseous state |
| Answer» D. Whether they are in solid, liquid or gaseous state | |
| 442. |
The snow on the mountains does NOT melt all at once when it is heated by the sum because: |
| A. | It becomes very hard |
| B. | It reflects most of the heat from the sum |
| C. | it has a low specific heat capacity |
| D. | it has a high latent heat of fusion |
| Answer» C. it has a low specific heat capacity | |
| 443. |
Why does ice coverfed in sawdust ct melt quickly? |
| A. | Sawdust does not allow the air to touch the ice |
| B. | The water is absorbed by sawdust |
| C. | Sawdust is a bad conductor of heat |
| D. | Sawdust is good conductor of heat |
| Answer» D. Sawdust is good conductor of heat | |
| 444. |
Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice- creams and jellies? |
| A. | Agar |
| B. | Chlorella |
| C. | Spirullina |
| D. | Gymnosperms |
| Answer» B. Chlorella | |
| 445. |
Decibel is used to measure the intensity of - |
| A. | Magnetic field |
| B. | Sound |
| C. | Light |
| D. | Heat |
| Answer» C. Light | |
| 446. |
While catching a ball, a player pulls down his hands to lower the - |
| A. | force/cy |
| B. | momentum |
| C. | impulse |
| D. | catching time |
| Answer» D. catching time | |
| 447. |
A player making a long jump is an example of . |
| A. | Projectile motion |
| B. | Rotatory motion |
| C. | Spinning motion |
| D. | Horizontal motion |
| Answer» B. Rotatory motion | |
| 448. |
Ice float on water because its density is |
| A. | more than water |
| B. | less than water |
| C. | zero |
| D. | same as water |
| Answer» C. zero | |
| 449. |
Sudden fall in barometer is indication of |
| A. | Storm |
| B. | Rain |
| C. | Tide |
| D. | Clear weather |
| Answer» D. Clear weather | |
| 450. |
Which set of conditions represents the easiest way to liquiify a gas? |
| A. | Low temperature and high pressure |
| B. | High temperature and low pressure |
| C. | Low temperat.ure and low pressure |
| D. | High temperature and high pressure |
| Answer» B. High temperature and low pressure | |