Question # 1

Mg²⁺ and Ca²⁺ ions react with soap to form calcium and magnesium salts of fatty acids called.

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Gelatin

Scum

Paste

None 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

The percentage of ocean in world water is.

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50%

67%

97%

25%

The density of water is ................. at 4^oC

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

soap is the sodium salt of long chain.

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Amino acids

Fatty acids

Nucleotides

None of them

Which process is responsible for ascending of water in plants from roots to leaf?

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Condensatin

Transpiration

Capillary action

Evaporation

Water which produces good lather with soap is called.

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Soft water

Hard water

Heavy water

All of them

Vibrious cholera bacteria causes the disease

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Cholera

Diarrhea

Jaundice

Hepatitis

The depletion of which gas results in the death of aquatic life.

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Oxygen

Carbon di oxide

Boath of them

Nome of them

Vibrious cholera causes.

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Choleera

Dysentery

Fluorsis

Hepatitis

Which of the following salt is soluble in water.

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NaCl

KCl

Na₂SO₄

All of them

Inland water includes.

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River

Lakes

Streams

All of them

Permanent hardness can be removed by using .

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Soda lime

Sodium Zeolite

Quick lime

Lime water

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