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Sources of Energy (Set - III)

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What is the maximum temperature that a solar cooker can attain?

  1. 70° - 80°C

  2. 100° - 140°C

  3. 150° - 160°C

  4. 50° - 60°C


Correct Option: B
Explanation:

The maximum temperature that a solar cooker can attain is 100° - 140°C. At this temperature, food can be cooked.

Which of the following gases is not a greenhouse gas?

  1. Carbon dioxide

  2. Methane

  3. Sulphur dioxide

  4. Carbon monoxide


Correct Option: D
Explanation:

Carbon monoxide is not a greenhouse gas.

Hydrogen bomb is based on __________ reaction and nuclear bomb is based on ________ reaction.

  1. nuclear fission, nuclear fusion

  2. nuclear combustion, nuclear fusion

  3. nuclear fusion, nuclear fission

  4. nuclear fusion, nuclear combustion


Correct Option: C
Explanation:

Hydrogen bomb is based on nuclear fusion reaction and nuclear bomb is based on nuclear fission reaction.

Which of the following is/are the characteristic(s) of a good fuel?

(a) High calorific value (b) Easy to transport (c) Very high ignition temperature

  1. Only (a)

  2. Only (c)

  3. Both (a) and (c)

  4. Both (a) and (b)


Correct Option: D
Explanation:

High calorific value and ease of transport are the characteristics of a good fuel. 

Which of the following is an advantage of geothermal energy?

  1. Geothermal energy can be obtained from any area of the land.

  2. Geothermal power plants can be set up in any area.

  3. The generation of geothermal energy is economical and environment friendly.

  4. Cold gases are produced from geothermal plants, which can be used elsewhere.


Correct Option: C
Explanation:

The generation of geothermal energy is economical and environment friendly.

Sea provides us

  1. wind energy and water energy

  2. tidal energy and water energy

  3. tidal energy and wave energy

  4. water energy and tidal energy


Correct Option: C
Explanation:

We get tidal energy and wave energy from the sea.

Why is the efficiency of a solar heating device low?

  1. The sun’s energy is available in condensed form and there is no proper method to store this energy.

  2. The sun’s energy is available in gaseous form and there is no proper method to store this energy.

  3. The sun’s energy is available in diffused form and there is no proper method to store this energy.

  4. The sun’s energy is available in solid form and there is no proper method to store this energy.


Correct Option: C
Explanation:

The sun's energy is available in diffused form and there is no proper method to store this energy.

Which of the following is not an advantage of nuclear energy?

  1. Nuclear fuel can be used for a long time.

  2. It can cause very serious health problems in case of an accident.

  3. Even a small amount of nuclear fuel has the ability to generate very high amount of energy.

  4. It helps to reduce the dependence on fossil fuels.


Correct Option: B
Explanation:

Accidents involving nuclear power plants are disastrous and have very grave consequences.

Which of the following statements is/are true?

  1. In nuclear fission, nucleus of a heavy atom, when bombarded with low energy neutrons, can split apart into lighter nuclei.

  2. Tremendous amount of energy is released in a nuclear fission reaction.

  3. Small amount of energy is released in a nuclear fission reaction.

  4. Both (1) and (2)


Correct Option: D
Explanation:

Nuclear fission reaction involves the splitting of a big atom into smaller atoms with a tremendous release of energy.

How is geothermal energy influenced by the sun?

  1. Geothermal energy increases due to an increase in the intensity of the sun's rays.

  2. Geothermal energy decreases due to decrease in the intensity of the sun's rays.

  3. Geothermal energy converts nuclear energy to thermal energy.

  4. Geothermal energy is not influenced by the sun.


Correct Option: D
Explanation:

Geothermal energy is not influenced by the sun. The source of geothermal energy is the heat present in the earth's crust.

Which of the following types of energy cannot be used on a cloudy day?

  1. Nuclear energy

  2. Wind energy

  3. Solar energy

  4. Geothermal energy


Correct Option: C
Explanation:

Solar energy cannot be used on a cloudy day as it requires sunlight for its operation.

Which of the following alternative energy sources pollute the environment on a bigger scale?

  1. Geothermal power plants

  2. Nuclear power plants

  3. Solar cells

  4. Wind turbines


Correct Option: B
Explanation:

Nuclear power plants produce wastes that are difficult to dispose off.

What is the basic ill–effect of fossil fuels?

  1. They are renewable.

  2. They produce air pollutants on burning.

  3. They are very costly.

  4. They produce noise pollution on burning.


Correct Option: B
Explanation:

They produce air pollutants on burning.

In which form is energy of water flowing in rivers stored in dams?

  1. Kinetic energy

  2. Wave energy

  3. Potential energy

  4. Turbine energy


Correct Option: C
Explanation:

Water flowing in rivers is stored in dams in the form of potential energy.  

Which of the following is an inexhaustible source of energy?

  1. Bioenergy

  2. Coal

  3. Petroleum

  4. Natural gas


Correct Option: A
Explanation:

Bioenergy is considered to be an inexhaustible source of energy.

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