CBSE Class 10 Science Worksheet
Unit V: Natural Resources - Sources Of Energy
1.
Give an example of the nuclear fusion reaction.
2.
State True or False: Tree plantation should be encouraged in order to ensure a clean environment and also provide bio-mass fuel.
A)
TRUE
B)
FALSE
3.
Fill in the blanks: ___________ is produced when crops, vegetable wastes etc., decompose in the absence of oxygen.
4.
How are winds currents created in the atmosphere?
5.
Choose the correct answer: Both power and manure are provided by______________.
A)
Nuclear plants
B)
Biomass plants
C)
Tidal plants
D)
Thermal plants
6.
Choose the correct answer: Which country is also known as the country of ‘winds’?
A)
France
B)
Switzerland
C)
Italy
D)
Denmark
7.
Why is hydrogen considered as a cleaner fuel than CNG?
8.
Choose the correct answer: Fossil fuels are________________.
A)
Renewable resources
B)
Non - renewable resources
C)
Inexhaustible resources
D)
None of these
9.
Choose the correct answer: What is the share of India in world's coal reserve?
A)
7%
B)
15%
C)
3%
D)
18%
10.
What is the use of slurry left in a bio gas plant?
11.
Choose the correct answer: Which of the following is not a renewable source of energy?
A)
Sun
B)
Wind
C)
Water
D)
Natural gas
12.
Choose the correct answer: Renewable sources of energy __________.
A)
Regenerate continously
B)
Regenerate in short period
C)
Regenerate in long period
D)
None of these
13.
Write three uses of bio gas.
14.
Choose the correct answer: The production of gas when animal and plant rot in absence of air is called__________.
A)
petoleum gas
B)
Natural gas
C)
Bio gas
D)
None of these
15.
Choose the correct answer: Which mirror is used in a solar cooker?
A)
Plane
B)
Convex
C)
Concave
D)
None of these
16.
Write three ill effects of burning of fossil fuels.
17.
Choose the correct answer: Metal used in the solar panel is______________.
A)
Gold
B)
Copper
C)
Aluminium
D)
Silver
18.
State True or False: Natural gas is also called clean fuel.
A)
TRUE
B)
FALSE
19.
Fill in the blanks: The plant and animal products, which act as the source of fuel are called ____________.
20.
Choose the correct answer: In hydropower plants_________________.
A)
Potential energy of water is converted into electrical energy
B)
Kinetic energy of water is converted into electrical energy
C)
Heat energy of water is converted into electrical energy
D)
None of these
CBSE Class 10 Science Worksheet
Unit V: Natural Resources - Sources Of Energy
Answers
1.
Two deuterium nuclei are made to fuse together to form a helium nucleus
2.
Option A
3.
Gobar gas
4.
Uneven heating of land by the Sun which creates a pressure gradient in the atmosphere.
5.
Option B
6.
Option D
7.
The burning of hydrogen releases water whereas burning of CNG produces carbon dioxide.
8.
Option B
9.
Option A
10.
It is used as manure as it richer in nitrogen and phosphorus
11.
Option D
12.
Option A
13.
(a) Clean domestic fuel (b) Left slurry can be used as manure (c) for electricity production
14.
Option C
15.
Option A
16.
(a) Air pollution (b) Global warming (c) Acid rain
17.
Option D
18.
Option A
19.
Biomass
20.
Option A
