Question # 1

The chemicla reaction during which a compound splits up into two or more simple substanes, is called.

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Additon reaction

Decomposition

Replacement reaction

Balanced reaction

Thermal decompositionof calcium carbonate produces a gas.

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Oxygen

Carbon di oxide

Nitrogen

Carbon monoxide

There are ......... types of reflection

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2

3

4

5

An alkali metal

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F

Be

Al

Na

Allowy is ......... forms of metals mixed together.

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Solid

Gas

Normal

Molten

The characters which are passed from parents to off spring.

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Environmental characters.

Naturla characters

Non -inheritable characters.

Hereditary characters.

Metals have .......... melting and boiling point.

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Low

High

Very low

Normal

In humans, the eye colour is developed due to the effects of.

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Diet

Environment

Genes

Both a and b

All parts of the nervous system. i.e. brain , spinal cord and nerves are made up of.

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CNS

PNS

Neurons

Nerve impulses

During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of.

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Law of conservation of momentum

Law of conservation of energy

Law of conseration of mass

Law of conseration of acceleration

A food chain starts from the..........

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Primary carnivores

Herbivores

Producers

Top carnivores

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

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