Daily Practice Problems
Class 10 Science
Sources of Energy
daily practice problem

Question 1:

Acid rain happens due to

(a) sun leads to heating of upper layer of atmosphere

(b) burning of fossil fuels release oxides of carbon, nitrogen & sulphur in the atmosphere

(c) electrical charges are produced due to friction amongst clouds.

(d) none of these

Question 2:

Fuel used in thermal power plants is

(a) water

(b) uranium

(c) fossil fuels

(d) biomass

Question 3:

What is the approximate value of solar constant on earth?

(a) 1.4 W/m2

(b) 1.4 kW/m2

(c) 1.2 W/m2

(d) None

Question 4:

Ocean Thermal energy is due to
(a) energy stored by waves in the ocean

(b) temperature difference at different levels in the ocean

(c) pressure difference at different levels in the ocean

(d) tides arising out in the ocean

Question 5:

Which of the following is renewable energy?

(a) Wind energy

(b) Solar energy

(c) Hydro energy

(d) All of the above

Question 6:

Which country is known as country of winds?

(a) Norway

(b) Denmark

(c) Finland

(d) Sweden

Question 7:

The biggest constituent of Biogas

(a) Methane

(b) Co2

(c) Hydrogen

(d) Hydrogen Sulphide

Question 8:

In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because

(a) its temperature increases

(b) larger amount of potential energy is converted into kinetic energy

(c) the electricity content of water increases with height

(d) more water molecules dissociate into ions

Question 9:

Mention the purpose of blackening the interior of a solar cooker.

Question 10:

Write the characteristic features of the micro-organisms which help in the production of biogas in a biogas plant?

Question 11:

What is a good source of energy?

Question 12:

What are the disadvantages of fossil fuels?

Question 13:

What is geothermal energy?  Write its one advantage and one limitation.

Question 14:

Give the construction, working, advantages and disadvantages of a solar cooker.

Question 15:

State any three advantages of charcoal over wood.

Question 16:

Write the difference between conventional and non-conventional sources of energy?

Question 17:

What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?.

Question 18:

How is nuclear energy generated during nuclear fusion?

Question 19:

Explain the concept of hydrogen bomb?

Question 20:

What are the disadvantages of nuclear energy?