Question # 1

The Earth's gravitational field strength is.

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1.6 N/kg

16 N/kg

10 N/kg

1N/kg

A substance that speed up the chemical reactions is called.

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Solute

Solvent

Solution

Catalyst

When a 10 cm iron rod is heated to hgh tempeature.

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Its volume decreases

Its volume increases

Its density deceases

Its density increses

The weight of an object in Earth's gravitaional field depends on.

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Mass of the object

Acceleration due to gravity

Both a and b

None of these

The weight of an object on Earth's sufrace is 600 N, What will be its weight on the Moon's surface.

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600 N

300 N

100 N

200 N

Force is

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A push

a pull

A friction

All above

In Animals, exchange of gaes occure through.

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Liver

Heart

Brian

Lungs

The particle of an atom having negative charge on it.

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Electron

Proton

Neutron

Nucleus

Freezing of a liquid is a

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Chemical change

Chemicla property

Physical change

None of these

The structure in plants used to produce food for plant is.

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Stem

Root

Branch

Leaf

The contraction of the objects on cooling is due to.

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Reduction in size of the particles

Increase in size of the particles

Increase in inter particles distances

Decrease in inter particle distances

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