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1. Fathom is the unit of:

A

Sound

B

Depth

C

Frequency

D

Distance

2. Light year is a measurement of:

A

Speed of aeroplanes

B

Speed of light

C

Stellar distances

D

Speed of rockets

3. Very small time intervals are accurately measure by:

A

White dwarfs

B

Quartz clocks

C

Atomic clocks

D

Pulsars

4. One kilometer is equal to how many miles?

A

0.84

B

0.5

C

1.6

D

0.62

5. Kilohertz is a unit which measures:

A

Power used by a current of one ampere

B

Electromagnetic radio wave frequencies

C

Voltage

D

Electric resistance

6. One horse power is equal to:

A

746 watts

B

748 watts

C

756 watts

D

736 watts

7. Kilowatt is a unit to measure:

A

Work

B

Power

C

Electricity

D

Current

8. Electric current is measured by:

A

Commutator

B

Anemometer

C

Ammeter

D

Voltmeter

9. Which of the following is used as a moderator in nuclear reactor?

A

Thorium

B

Graphite

C

Radium

D

Heavy water (D2O)

10. Atoms are composed of:

A

Electrons and protons

B

Electrons only

C

Protons only

D

Electrons and Nuclei

11. Who suggested that most of the mass of the atom is located in the nucleus?

A

Thompson

B

Bohr

C

Rutherford

D

Einstein

12. In an atomic nucleus, neutrons and protons are held together by:

A

Gravitational forces

B

Exchange forces

C

Coulombic forces

D

Magnetic forces

13. Which of the following is a protein?

A

Natural rubber

B

Starch

C

Cellulose

D

None of these

14. In vulcanisation, natural rubber is heated with:

A

Carbon

B

Silicon

C

Sulphur

D

Phosphorous

15. What cause a moving body to resist a change in its state of motion?

A

Displacement

B

Acceleration

C

Inertia

D

Velocity

16. AIDS is caused by:

A

Bacteria

B

Fungus

C

Helminth

D

Virus

17. Noise or Noise pollution measured in:

A

Phon

B

Deci

C

Decibel

D

Decimal

18. Which layer protects earth from harmful rays of the Sun?

A

Ionosphere

B

Ozone layer

C

Troposphere

D

Magnetosphere

19. Which is the absolute temperature scale?

A

Celsius

B

Fahrenheit

C

Kelvin

D

All of these

20. Which Vitamin is called anti-sterility vitamin?

A

Vitamin – E

B

Vitamin – B12

C

Vitamin – A

D

Vitamin – C