Question # 1

A substance that speed up the chemical reactions is called.

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Solute

Solvent

Solution

Catalyst

Chemical bond teh forms between metallic and non-metallic atoms.

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Covalent

Ionic

Metalic

None of these

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

What happens to water on heating.

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Evaporates

Condense

Freez

None of these

Sound waves are not.

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Compressional waves

Transverse waves

Mechnical waves

Low frequency waves

Formation of steam from water is example of.

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Chemical change

Physical Change

Both of these

None of these

Which of the following plays an important role in blood clotting.

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Red blood cells

White blood cell

Platelets

Bone cells

Conservation of water means.

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A using water

Save water

Avoiding water

Wasting water

Brine water is mixture of

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Salt and sugar

Salt and acetic acid

Salt and water

Salt and alcohol

The temperature of melting ice in Fahrenheit scale is.

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0 oF

32 oF

100 oF

212 oF

The loss of water from aerial parts of the plants.

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Respiration

Photosynthesis

Evaporation

Transpiraton

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