Question # 1

The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water.

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Nitrogen

Hydrogen

Oxygen

Carbon

The freezing point of water is:

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10 ^oC

100^oC

0^oC

46^oC

Which organ cause to function during Jaundice?

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Liver

Kindney

Stomach

Large intestine.

Rapid growth of algae in water bodies is because of detergent having.

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Carbonate salts.

Sulphonic acid salts.

Sulphate salts.

Phosphate salts.

How many percentage to water contains oceans?

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67%

77%

87%

97%

Specific heat capacity of water is.

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4.2 KJg^-1 K^-1

4.2 Jg^-1K^-1

2.4 KJg^-1K^-1

2.4 Jg^-1K^-1

Swimming pools are cleaned by the process.

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Chlorination

Hydrogenations

Saponification

None of them

Cause of diarrhoea among following is:

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Diarrhea

Cholera

Cryptosporidium

Typhoid

One H₂O molecule can form hydrogen bonding with how many other H₂O molecules?

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One

Two

Three

Four

The water which produces good lather with soap is called:

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soft water

hard water

heavy water

typical water

Water molecule has a structure:

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Ionic

Non polar

Tetrahedral

Polar

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

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

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