VAO Solved Papers

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(VAO Solved Papers)

1. The first known metal to man is –

Gold
Silver
Copper
Platinum

Answer is - Copper

2. Gray code for number 7 is –
945 C
927 C
956 C
961 C

Answer is – 961 C

3. The sum of two no. is 60 and the difference is 8,So the numbers are –
32,26
30,22
22,18
12,4

Answer is – 32, 26

4. The total no. of district in tamil nadu is –
22
35
32
20

Answer is – 32

5. Dowry prohibition act was passed in the year –
1961
1955
1965
1959

Answer is – 1961

6. Tamil Nadu is …………. In geographical are among the states of the Indian union –
Tenth
Eleventh
Ninth
Eighteenth

Answer is – Eleventh

7. Rajya Sabha members are elected for-
4 years
2 years
3 years
6 years

Answer is – 3 years

8. Election commission of india is a body of …………. Members .
4
3
2
5

Answer is – 3

9. He stood ………… aman and Tanya.
Middle
Center
Among
Between

Answer is - Between

10. Did you see sapna …….. party.
On
In
At
Under

Answer is – At

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
B. x-axis
C. y-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. Anergy
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
B. diffraction
C. polarisation
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
B. kidneys
C. heart
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

27. The acid which etches glass is
A. nitric acid
B. sulphuric acid
C. hydrofluoric acid
D. hypochlorous acid

28. Which of the following diseases is likely to spread in the entire community if a leaky septic tank contaminates the water supply?

A. Cholera
B. Cancer
C. Tuberculosis
D. Leprosy

29. Yeast help in the production of
A. oxygen
B. glucose
C. alcohol
D. salts

30. Many pulses are obtained from plants of the family
A. Euphorbiaceae
B. Fabaceae
C. Asteraceae
D. Musaceae