Question # 1

Which one of the following diseases causes liver inflammation?

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Typhoid

Jaundice

Cholera

Hapatitis

The surface tension of water is:

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very low

moderate

high

zero

The percentage of water in human body is.

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40%

50%

60%

70%

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.

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Phosphate

Calcium

Sodium

All of them

Temporary hardness can be removed by__________.

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Quick lime

Slaked lime

Lime stone

HCl

Cause of diarrhoea among following is:

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Diarrhea

Cholera

Cryptosporidium

Typhoid

Which disease causes bone and tooth damage?

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Fluorosis

Hepatits

Cholera

Jaundice

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

The process of removing temporary hardness of water.

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Clark's method

Washing soda method

Sodium zeolite

Filteration method

Swimming pools are cleaned by the process.

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Chlorination

Hydrogenations

Saponification

None of them

Example of pest is

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Weeds

Herbs

Insect

All of them

Water become hard because of:

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Ca+2

Mg+2

SO-24

all of these

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