general science trivia questions

general science trivia questions for School College Quiz and many Exams Like UPSc NDA Teachers PSC RRB .
Free Online Quiz Containing 20 Test Questions

1. The dimensions of Planck’s constant are the
same as the dimensions of-
(a) Energy
(b) Frequency
(c) Linear Momentum
(d) Angular Momentum
(e) None of the above
Answer. (d)

2. Sometimes the tubes in the well-inflated tyres of a cycle left in the sun burst open-
(a) Because the pressure of air inside the Tube increase
(b) Because the volume of air inside the tube increases due to rise in its temperature
(c) Because the tube containing air melts
(d) Because the volume and the pressure
both increase
(e) Nothing of the above
Answer. (b)

3. Galvanized iron is coated with a thin coating of-
(a) Copper
(b) Tin
( c ) Zinc
(d) Aluminum
(e) White lead
Answer. (c)

4. In the visible spectrum the colour having the
shortest wavelength is-
(a) Violet
(b) Blue
(c) Red
(d) Yellow
(e) Green
Answer. (a)

5. The heater element in an electric iron is
made of-
(a) Copper
(b) Tungsten
(C) Nichrome
(d) Iron
(e) Platinum
Answer. (c)

6. At sun rise or at sun set, the sun appears to
be reddish while at midday it looks white. This is because-
(a) The sun is colder at sunrise or at sunset
(b) Diffraction sends red rays to the earth at
these time
(c ) Refraction causes this phenomenon
(d) Scattering due to dust particles and air molecules causes this phenomenon
(e) None of these
Answer. (d)

7. The radiant energy of the sun results from-
(a) Nuclear fusion
(b) Nuclear fission
(c) Cosmic radiation
(d) Combustion
(e) Explosion
Answer. (a)


8. The image formed on the retina of the eye is-
(a) Upright and real
(b) Virtual and upright
(c) Real and inverted
(d) Enlarged and real
(e) Larger than the object
Answer. (c)


9. The surface water in a lake is just going to
Freeze. What is the temperature of water at
The bottom?
(a) 0°c
(b) More than 4°C
(c) 4°C
(d) Less than 4°C
(e) -2°C
Answer. (c)


10. Which of the following is the most viscous Medium ?
(a) Coal tar
(b) Water
(c) Glycerin
(d) Alcohol
(e) Air
Answer. (a)



11. Railway tracks are banked on curves so
That-
(a) No frictional force may be produced
between the track and the wheel
(b) The train may not fall down inwards
(c) The weight of the train may be reduced
(d) Necessary centripetal force may be
Obtained from the horizontal component
Of the weight of the train
(e) Necessary centrifugal force may be
Obtained from the horizontal component
Of the weight of the train

Answer. (d)

12. Oil rises up the wick in a lamp because-
(a) Oil is volatile
(b) Oil is very light
(c) Of the surface tension phenomenon
(d) Of the diffusion of oil through the wick
(e) Of the capillary action phenomenon
Answer. (c)


13. Which of the following utilizes Newton’s?
Third law of motion?
(a) Archery
(b) Space-rocket
(c) Venturimeter
(d) Internal combustion engine
(e) Kite flying
Answer. (b)


14. The main source of heat is-
(a) The sun
(b) The stars (excluding the sun)
(c) The interior of the earth
(d) Chemical reactions
(e) Electricity
Answer. (a)



15. The air becomes heated by-
(a) Conduction
(b) Convection
(c) Radiation
(d) Expansio
(e) Diffusion
Answer. (b)


16. To a space traveller on the moon during day
Time the lunar sky appears-
(a) Blue
(b) Black
(c) White
(d) Red
(e) Yellow
Answer. (b)


17. Sound is a form of-
(a) Energy
(b) Matter
(c) Radiation
(d) Electromagnetic energy
(e) None of these
Answer. (a)


18. Which of the following statements is true?
(a) Sound waves, not light waves, bend
around obstacles
(b) Light waves, not sound waves, bend
around obstacles
(c) Both light and sound waves bend around
obstacles
(d) Neither sound waves nor light waves
Bend around obstacles
(e) None of these
Answer. (e)


19. A mirage is the result of-
(a) The reflection of light from hot sand
(b) Fluctuation in the refractive index of the
Atmosphere with height
(c) Increase in the refractive index of the
Atmosphere with height
(d) Decrease in the refractive index of the
Atmosphere with height
(e) None of these
Answer. (c)


20. A person cannot see objects clearly which
are nearer than 75 cms. From his eyes. What
Disease is he suffering from?
(a) Astigmatism
(b) Colour blindness
(C) Myopia
(d) Hypermetropia
(e) Hydrophobia
Answer. (d)