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.
| 1. |
Which among the following is false about work? |
| A. | If displacement is zero, work is zero |
| B. | Work done can be negative |
| C. | It is a vector quantity |
| D. | Its unit is Joule |
| Answer» D. Its unit is Joule | |
| 2. |
Photophobia is - |
| A. | a disease caused by too much sunlight |
| B. | abnormal intolerance of light |
| C. | the adjustment of the eye for light |
| D. | the ability to perceive light |
| Answer» D. the ability to perceive light | |
| 3. |
What is Hooke's Law? |
| A. | Stress is inversely proportional to strain. |
| B. | Stress is directly proportional to strain. |
| C. | Stress and strain are dependent on each other. |
| D. | Stress and strain are independent of each other. |
| Answer» C. Stress and strain are dependent on each other. | |
| 4. |
Which of the following occurred first? |
| A. | Albert Einstein propounded the General Theory of Relativity |
| B. | Max Planck unveiled the Quantum Theory |
| C. | Guglielmo Marconi sent out the first wireless signals |
| D. | Wright Brothers successfully flew an aircraft |
| Answer» D. Wright Brothers successfully flew an aircraft | |
| 5. |
What is a neuron? |
| A. | Basic unit of energy |
| B. | Particle released during radioactivity |
| C. | The anti-particle of neutron |
| D. | Basle unit of nervous system |
| Answer» E. | |
| 6. |
Ondometer is a - |
| A. | Measuring instrument for distance covered by motor wheels |
| B. | Measuring instrument for frequency of electromagnetic waves |
| C. | Device for measuring sound intensity |
| D. | Measuring instrument for electric power |
| Answer» C. Device for measuring sound intensity | |
| 7. |
What is the objective of the Kyoto Protocol? |
| A. | To abolish child labour |
| B. | To eliminate nuclear weapons |
| C. | To increase ground water levels |
| D. | To reduce greenhouse gases |
| Answer» E. | |
| 8. |
Heat energy of an object is - |
| A. | The average energy of the molecules of the object |
| B. | The total energy of the molecules of the object |
| C. | The average velocity of the molecules of the object |
| D. | The average P.E. of the molecules of the object |
| Answer» C. The average velocity of the molecules of the object | |
| 9. |
Cactus is referred to as - |
| A. | Hydrophyte |
| B. | Mesophyte |
| C. | Xerophyte |
| D. | Epiphyte |
| Answer» D. Epiphyte | |
| 10. |
The most malleable metal is - |
| A. | platinum |
| B. | silver |
| C. | gold |
| D. | iron |
| Answer» D. iron | |
| 11. |
Water will not be vaporized if |
| A. | the temperature is 0 C |
| B. | the humidity is 0% |
| C. | the humidity is 100% |
| D. | the temperature is 100 C |
| Answer» D. the temperature is 100 C | |
| 12. |
Which one of the following is used for determining the structure of crystal - |
| A. | Gamma rays |
| B. | X-rays |
| C. | UV rays |
| D. | visible light |
| Answer» C. UV rays | |
| 13. |
The required DC voltage for arc welding is- |
| A. | 6 to 9 V |
| B. | 50 to 60 V |
| C. | 200 to 250 V |
| D. | 90 to 100 V |
| Answer» D. 90 to 100 V | |
| 14. |
Silicon is used in which of the following? |
| A. | Semiconductors |
| B. | solar energy devices |
| C. | transistors |
| D. | All of these |
| Answer» E. | |
| 15. |
The opening and closing of the stomatal pores is a function of the - |
| A. | Guard cells |
| B. | Chloroplast |
| C. | Xylem |
| D. | Phloem |
| Answer» B. Chloroplast | |
| 16. |
The word 'insulation' means |
| A. | matters which insulate |
| B. | incoming solar radiation |
| C. | insoluble matters |
| D. | None of the above |
| Answer» C. insoluble matters | |
| 17. |
The theory of inheritance of acquired characters was propounded by - |
| A. | Charles Darwin |
| B. | Gregor Mendel |
| C. | J. B. Lamarck |
| D. | Weismann |
| Answer» D. Weismann | |
| 18. |
Number of basic SI unit is . |
| A. | 4 |
| B. | 7 |
| C. | 6 |
| D. | 5 |
| Answer» C. 6 | |
| 19. |
Elecronegativity is the measure of - |
| A. | Metallic character |
| B. | Non-metallic character |
| C. | Basic Character |
| D. | None of these |
| Answer» C. Basic Character | |
| 20. |
Where are mesons found? |
| A. | Cosmic rays |
| B. | X-rays |
| C. | Gamma rays |
| D. | Laser beam |
| Answer» B. X-rays | |
| 21. |
Where is a transistor most likely to be found? |
| A. | Wrist watch |
| B. | Fuse |
| C. | Hearing aid |
| D. | Fluorescent lamp |
| Answer» D. Fluorescent lamp | |
| 22. |
Ohm s law obeyed in - |
| A. | a metallic conductor |
| B. | a semi conductor |
| C. | an electron tube |
| D. | in all of the above |
| Answer» B. a semi conductor | |
| 23. |
Which zone of a candle flame is the hottest? |
| A. | Dark innermost zone |
| B. | Outermost zone |
| C. | Middle luminous zone |
| D. | Central zone |
| Answer» D. Central zone | |
| 24. |
In a transistor, the base is . |
| A. | an insulator |
| B. | a conductor of low resistance |
| C. | a conductor of high resistance |
| D. | an extrinsic semiconductor |
| Answer» C. a conductor of high resistance | |
| 25. |
Therm' is the unit of |
| A. | Power |
| B. | Heat |
| C. | Light |
| D. | Distance |
| Answer» C. Light | |
| 26. |
Magnetism in materials is due to - |
| A. | electrons at rest |
| B. | circular motion of electrons |
| C. | protons at rest |
| D. | all neutrons at rest |
| Answer» C. protons at rest | |
| 27. |
Watt is a unit of - |
| A. | Time |
| B. | Power |
| C. | Light |
| D. | intensity of light |
| Answer» C. Light | |
| 28. |
Cryogenic is a science deals with - |
| A. | High Temperatures |
| B. | Low Pressure |
| C. | High Pressure |
| D. | Low Temperature |
| Answer» E. | |
| 29. |
A device which is used to limit the current in an electrical circuit is called a - |
| A. | Grid |
| B. | Fuse |
| C. | Hub |
| D. | Conductor |
| Answer» C. Hub | |
| 30. |
Two rods, one of copper and other of steel, experience the same up thrust when placed in water. Thus, both have |
| A. | equal volume |
| B. | equal weight |
| C. | equal density |
| D. | equal mass |
| Answer» B. equal weight | |
| 31. |
Minimum numbers of unequal vectors which can give zero resultant are - |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | More than four |
| Answer» C. Four | |
| 32. |
Water is not suitable as a calorimetric substance because it |
| A. | has high specific heat |
| B. | is a good conductor |
| C. | has high boiling point |
| D. | low latent heat of vaporization |
| Answer» B. is a good conductor | |
| 33. |
When a body falls from an aeroplane, there is increase in its |
| A. | Kinetic energy |
| B. | Mass |
| C. | Acceleration |
| D. | Potential energy |
| Answer» D. Potential energy | |
| 34. |
Energy is continuously created in the sun due to |
| A. | Nuclear fusion |
| B. | Nuclear fission |
| C. | Radioactivity |
| D. | Artificial radioactivity |
| Answer» B. Nuclear fission | |
| 35. |
Which among the following types of coal produces most heat per unit? |
| A. | Coal |
| B. | Lignite |
| C. | Anthracite |
| D. | Pit |
| Answer» D. Pit | |
| 36. |
When the barometer reading dips suddenly, it is an indication of |
| A. | Hot weather |
| B. | Calm weather |
| C. | Storm |
| D. | Dry weather |
| Answer» D. Dry weather | |
| 37. |
'SONAR' is mostly used by - |
| A. | Doctors |
| B. | Engineers |
| C. | Astronauts |
| D. | Navigators |
| Answer» E. | |
| 38. |
'Cryogenics' is a science dealing with |
| A. | high temperatures |
| B. | low temperatures |
| C. | friction and wear |
| D. | growth of crystals |
| Answer» C. friction and wear | |
| 39. |
Which one of the following instruments is used to study dispersion of light? |
| A. | Microscope |
| B. | Telescope |
| C. | Spectrometer |
| D. | Photometer |
| Answer» D. Photometer | |
| 40. |
Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. |
| A. | light waves |
| B. | electromagnetic waves |
| C. | electric waves |
| D. | magnetic waves |
| Answer» C. electric waves | |
| 41. |
The mass and energy equivalent to 1 a.m.u. respectively are - |
| A. | 1.67 x 10 27 g, 9.30 MeV |
| B. | 1.67 x 10 27kg, 930 MeV |
| C. | 1.67 x 10 27kg, 1 MeV |
| D. | 1.67 x 10 34 kg, 1 MeV |
| Answer» C. 1.67 x 10 27kg, 1 MeV | |
| 42. |
This scientist gave the law- Properties of elements are a periodic function of their atomic number. This property of the fundamental importance of atomic number was discovered by- |
| A. | Johann Wolfgang D bereiner |
| B. | John Newlands |
| C. | Dmitri lvanovich Mendel ev |
| D. | Henry Moseley |
| Answer» E. | |
| 43. |
The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as |
| A. | Audible sounds |
| B. | Ultrasonics |
| C. | Infrasonics |
| D. | Megasonics |
| Answer» B. Ultrasonics | |
| 44. |
A falling drop of rain water ac-quires the spherical shape due to |
| A. | Viscosity |
| B. | Surface Tension |
| C. | Atmospheric pressure |
| D. | Gravitational force |
| Answer» C. Atmospheric pressure | |
| 45. |
A spherical ball made of steel when dropped in mercury container will |
| A. | sink in mercury |
| B. | will be on the surface of mercury |
| C. | will be partly immersed mercury |
| D. | will dissolve in mercury |
| Answer» C. will be partly immersed mercury | |
| 46. |
In the absence of ozone layer, Which rays will enter into atmosphere? |
| A. | Infrared |
| B. | Visible |
| C. | Ultraviolet |
| D. | X-rays |
| Answer» D. X-rays | |
| 47. |
Light year is the unit of - |
| A. | Frequency |
| B. | Distance |
| C. | Energy |
| D. | Power |
| Answer» C. Energy | |
| 48. |
Cathode rays when obstructed by metal cause emission of - |
| A. | ray |
| B. | X ray |
| C. | ray |
| D. | ray |
| Answer» C. ray | |
| 49. |
The term "infrasonic" applied to sound refers to sound waves below - |
| A. | 200 Hz |
| B. | 20000 Hz |
| C. | 20 Hz |
| D. | 0 Hz |
| Answer» D. 0 Hz | |
| 50. |
Speed of sound in solids is - |
| A. | 10 times that in gas/ 10 |
| B. | 20 times that in gas/ 20 |
| C. | 5 times that in gas/ 5 |
| D. | 15 times that in gas/ 15 |
| Answer» E. | |