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General Science 8th Class English Medium Online Test MCQs With Answers

Question # 1

Thermal decompositionof calcium carbonate produces a gas.

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Oxygen

Carbon di oxide

Nitrogen

Carbon monoxide

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Question # 2

Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.

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Hydrogen

Iodine

Oxygen

Nitrogen

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Question # 3

------------- gas is released when dead organisms are decomposed by the decomposers.

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

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Question # 4

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

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Question # 5

The best material to be used as a core in the coils for making electromagnet is.

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Rubber

Plastic

Soft Iron

Steel

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Question # 6

Baking soda , sodium chloride, calcium carbonate and glycerin are usually used for making homemade.

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Bioplastic

Detergent

Tooth paste

Hardwash

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Question # 7

Mass number is number of.

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Protons

Neutrons

Both a and b

Electrons

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Question # 8

What causes object to move.

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Velocity

Unbalnced forces

Balanced force

Friction

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Question # 9

Neurons carry messages in the form of.

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Electromagnetic waves

Electro chemicla waves

Transverse waves

Longitudinal waves

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Question # 10

On ampere is equal to.

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100 mA

10 mA

1000 mA

10000 mA

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Question # 11

During reproduction, living things pass their characteristics to their.

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Parents

Grand parents

Off spring

Brother and sister

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