Question # 1

The % age of drinkable water on earth is

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2.0%

0.02%

0.2%

5.0%

Swimming pools are cleaned by the process.

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Chlorination

Hydrogenations

Saponification

None of them

The process by which water rises up from the roots of plants to leaves is called.

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Photosynthesis

Respiration

Surface tension

Capillary action

Temporary hardness in water can he removed by.

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Boiling Method

Using washing soda

Using sodium zeolite

All of them

Which one of the following diseases causes liver inflammation?

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Typhoid

Jaundice

Cholera

Hapatitis

Water has a maximum density at .

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10^oC

0^oC

4^oC

100^oC

Temporary hardness is because of .

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Ca(HCO₃)₂

CaCO₃

MgCO₃

MgSO₄

Hard water can cause.

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Stomach disorder

Boiler blasts

Inefficiency of engine

All of them

Temporary hardness is due to the presence of bicarbonates of.

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Calcium

Magnsium

Both of them

None of them

Water which produces good lather with soap is called.

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Soft water

Hard water

Heavy water

All of them

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Sodium zeolite is resin of:

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NaAl(SiO₃)₂

KAl(SiO₃)₂

LiAl(SiO₃)₂

RbAl(SiO₃)₂

Boiling point of water is:

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0^oC

25^oC

80^oC

100^oC

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