Question # 1

Industrial effluents are highly

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Toxic organic compounds.

Inorganic salts.

Heavy metals

All of them

the removal of which ion causes water softening.

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Na⁺

Mg²

Li⁺

K⁺

Example of pest is

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Weeds

Herbs

Insect

All of them

Which hepatitis is caused by contaminated water?

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Hepatitis A

Hepatitis B

Hepatitis C

Hepatitis D

Permanent hardness can be removed by using .

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Soda lime

Sodium Zeolite

Quick lime

Lime water

Sea water in unfit for drinking purpose die to the presence of.

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Salts

Algae

Fishes

All of them

Which one of the following diseases severe diarrhea and can be fatal?

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Joundice

Cholera

Dysentery

Typhoid

Gypsum in water is.

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Sparingly soluble

Insoluble

Highly soluble

None of them

Chemical formula of hypochlorous acid is.

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HCl

HOCl

H₂CO₃

HF

Water dissolves Non-ionic compounds by:

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Ion-Ion forces

Dipole forces

Dipole - Dipole forces

Hydrogen Bonding

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

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

Which of the following in soluble in water.

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Organic acids

Glucose

Alcohal

All of them

The heat capacity of water is greater than rocks.

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4 times

5 times

6 times

7 times

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