CBSE Class 8 Science Objective Type Questions with Answers

Questions

121 The percentage of nitrogen is

A 21%

B 78%

C 12%

D 87%

View Answer

Answer: 78%

122 Green House gas is

A Nitrogen

B Oxygen

C Methane

D Carbon dioxide

View Answer

Answer: Carbon dioxide

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123 Air pollution causes

A Global warming

B Respiratory problems

C Soil erosion

D None of these

View Answer

Answer: Respiratory problems

124 Most polluted river in the world is

A Yamuna

B Cavery

C Chenab

D Ganga

View Answer

Answer: Ganga

125 The Taj Mahal is being affected by

A Noise pollution

B Air pollution

C Water pollution

D None of these

View Answer

Answer: Air pollution

126 Highest percentage of air consists of

A Oxygen

B Carbon dioxide

C Nitrogen

D Argon

View Answer

Answer: Nitrogen

127 Leaves or fruits fall on the ground due to

A magnetic force

B gravitational force

C electrostatic force

D muscular force

View Answer

Answer: gravitational force

128 The force between two charged bodies is called

A muscular force

B gravitational force

C magnetic force

D electrostatic force

View Answer

Answer: electrostatic force

129 The strength of force is expressed by?

A weight

B mass

C magnitude

D longitudinal force

View Answer

Answer: magnitude

130 What is force?

A pull

B push

C push and push both

D none of these

View Answer

Answer: push and push both

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