Question # 1

Hook worm infects.

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Liver

Small intestine

Large intestine

Stomach

The heat capacity of water is greater than rocks.

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4 times

5 times

6 times

7 times

The percentage of water in human body is.

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40%

50%

60%

70%

Cholera is caused by

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Protozoa

Virus

Bacteria

Fungi

Clark's method is used to remove the hardness of water, in this method which is used.

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Ca(HCO₃)₂

Na-Zeolite

Ca-Zeolite

Ca(OH)₂

Hard water can cause.

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Stomach disorder

Boiler blasts

Inefficiency of engine

All of them

Calcium carbonate is in water.

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Insoluble

Sparingly

None of them

Soluble

The removal of Mg⁺² and Ca⁺² Ion which are responsible for the hardness of water is called.

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Temporary hardness

Permanent hardness

Water softening

Hydrogen bonding

A sea level the boiling point of water is.

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0^oC

98^oC

100^oC

110^oC

Which of the following salt is soluble in water.

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NaCl

KCl

Na₂SO₄

All of them

Which disease cause when humans use water of industrial effluents.

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Cancer

Asthma

Jaundice

cholera

Which one of the following properties of water is responsible for rising of water in plants?

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Specific heat capacity

Viscosity

Excellent solvent action

Capillary action

The % age of drinkable water on earth is

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2.0%

0.02%

0.2%

5.0%

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