Prevention and Controlling of Water Pollution

Q.

What is 3R formula?

Q.

List any four major remedies of water pollution.

Q.

In which of the following ways can we reduce the water pollution in any river?

1. Separating the non-biodegradable waste before dumping them.

2. All of these

3. Treating the sewage waste before dumping it in the river.

4. Finding alternate waste disposal methods.

Q.

Identify the method that helps to prevent water pollution.

1. Use of biodegradable fertilizers and pesticides

2. Release of untreated industrial waste

3. Wastage of water due to leaking taps at home

4. Encourage the use of synthetic detergents

Q.

The water purification methods are:

1. Boiling water
2. Chlorination
3. Cooling water
4. Household filtration

Q. Match the below control measures with their respective cause.

1. Waste water treatment
2. Construct toilets
3. Nutrient management

Q.

How can we reduce water pollution?

Q. What are the measures to be taken to prevent water pollution?

1. The sewage should not be discharged directly into the rivers.
2. Increased use of excess fertilizers and pesticides.
3. It is recommended to use biodegradable detergents.
4. Dead human and animal bodies should not be thrown into rivers.

Q. In order to prevent water pollution, water that has been used for the primary purpose should not be used for secondary purpose.

1. True
2. False

Q. Give one word for
(a) using waste to make new products: __________
(b) low-lying land used to dispose garbage: __________

Q.

More than one correct answer

Which of the following steps should be followed to minimize water pollution?

1. Less use of artificial fertilizers and insecticides

2. Discharging untreated sewer water into rivers

3. Use of manures

4. Use of natural pesticides

Q.

The method of prevention of water pollution from an industrial perspective is:

1. Treating polluted water in the factory before dumping.

2. Adding chemicals to water to make it transparent.

3. Adding $C{O}_2$ in the water.

4. Adding $S{O}_2$ in the water.

Q. Sewage water from residential areas and used water from industries must be disposed of directly into the rivers and lakes.

1. True
2. False

Q.

Water can be saved by:

1. Reusing the water used for washing vegetables

2. Reducing use of water by closing taps while brushing

3. Recycling water by storing it in filter unit

4. Rain water can be stored in tanks

Q.

The green bins provided by municipality are used for collecting which type of waste?

1. Plastics

2. Metals

3. Kitchen wastes

4. Glass

Q.

The water purification methods are:

1. Household filtration
2. Chlorination
3. Boiling water
4. Cooling water