TNPSC Model Question Paper Free Download
TNPSC Original Question Paper:
1. Density of matter is defined as
A. mass / volume
B. mass × volume
C. volume / mass
D. none of these
2. The resultant upthrust on a body partly immersed in
liquid acts through
A. the centre of gravity
B. the metacentre
C. the centre of pressure
D. none of these
3. A transverse wave travels along z-axis. The particles of
the medium travels along
A. z-axis C. y-axis
B. x-axis D. in x-y plane
4. Joule-Thomson cooling is
A. temperature dependent
B. temperature independent
C. dependent on the molecular
weight of the gas
D. dependent on the total mass of
the gas
5. The principle of action of points is used in
A. capacitors
B. inductors
C. resistors
D. lightning arrestors
6. A jet engine works under the principle of
A. mass
B. energy
C. linear momentum
D. angular momentum
7. To find the temperature of the sun, the following law is
used:
A. Charles’ law
B. Stefan’s fourth power law of
radiation
C. Boyle’s law
D. Kirchhoff’s law
8. Calotropis is an example of the following phyllotaxy:
A. opposite and decussate
B. spiral
C. whorled
D. alternate
9. Radio carbon dating is used to
A. find diseases
B. find the age of relics
C. find the carbon content in the
atmosphere
D. none of these
10. Frequency modulation is more advantageous than amplitude
modulation because
A. there will be no distortion
B. distortion will be maximum
C. no internal noises produced
D. internal noises can be filtered
11. X-rays travel with the velocity of
A. light
B. sound
C. positive rays
D. alpha rays
12. A loudspeaker converts
A. electrical energy into sound
energy
B. sound energy into electrical
energy
C. small sound into a large sound
D. none of the above
13. The transverse wave nature of light was proved by
A. interference C. polarisation
B. diffraction D. refraction
14. Electric iron takes a long time to cool because of
A. greater emissivity
B. lesser emissivity
C. less absorptive power
D. more absorptive power
15. Helium is preferred to hydrogen in airships because it
A. has greater lifting power
B. is less dense
C. cheaper
D. does not form explosive
mixture with air
16. Excessive consumption of alcohol damages the
A. liver C. heart
B. kidneys D. lungs
17. Which of the following has the smell of garlic?
A. White phosphorus
B. Red phosphorus
C. Phosphorus chloride
D. Phosphine
18. A common nitrogenous fertilizer is
A. urea
B. superphosphate
C. triple phosphate
D. potassium chloride
19. Which element is a metalloid in the following?
A. Copper C. Aluminium
B. Arsenic D. Gold
20. Night blindness is caused due to the deficiency of
A. Vitamin A C. Vitamin K
B. Vitamin B D. Vitamin E
21. Mercury is used in thermometers because it
A. is heavy
B. is a liquid
C. expands uniformly
D. is a metal
22. Sodium chloride is the scientific name of
A. common salt C. rust
B. soft coke D. chalk
23. Fresh foods and fruits contain more of
A. proteins C. vitamins
B. fats D. carbohydrates
24. Electric bulbs are filled with the gas
A. oxygen
B. carbon dioxide
C. argon
D. nitrogen
