set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

At the present level of technology available in India, solar energy can be conveniently used to :

1. Supply hot water to residential buildings.
2. Supply water for minor irrigation projects.
3. Provide street lighting.
4. Electrify a cluster of villages and small towns.

a) 2 and 4

b) 1 and 3

c) 1, 2, 3 and 4

d) 1, 2 and 3

Question : 2

Audio signal cannot be transmitted because:

a) The signal cannot be amplified for distance communication

b) The transmitting antenna length is very small to design

c) The signal has more noise

d) The transmitting antenna length is very large and impracticable.

Question : 3

Which of the following does NOT allow harmful ultraviolet radiations from the sun to reach the earth?

a) NO₂

b) CO₂  

c) O₂  

d) O₃  

Question : 4

Which among the following statements are the requirements of good source of energy?

1. It should do a large amount of work per unit volume or mass.
2. It should be easily accessible.
3. It should be easy to store and transport.
4. It should be economical.

a) A, B, C

b) B, C, D

c) A, B

d) All of thesegenerator.

Question : 5

The phenomenon of high and low tides and the difference in sea levels give________.

a) Tidal energy

b) Wave energy

c) Hydel energy

d) Thermal energy

Question : 6

Television signal cannot be received generally beyond a particular distance due to

a) weakness of antenna

b) weakness of signal

c) curvature of the Earth

d) absorption of signal in air