Water Conservation

Q. Which of the following is the most effective method of water conservation?

1. Rain water harvesting
2. Building Dams
3. Treating water in the industries before draining it into water body
4. Using integrated pest management system in agriculture

Q.

Drinking water has a pH level between 6 and 8.5.

1. True

2. False

Q. What percentage of freshwater on Earth is not available for drinking purpose?

1. 
2. 
3. 
4. 

Q.

Name the water harvesting structure in Uttar Pradesh?

Q. What percentage of Earth’s water is considered as freshwater?

1. 
2. 
3. 
4. 

Q. Describe briefly the 'khadin' system of rainwater harvesting practised in Rajasthan.

Q. Which of the following is the most effective method of water conservation?

1. Rainwater harvesting
2. Building dams
3. Treating water in the industries before draining it into water bodies
4. Using integrated pest management system in agriculture

Q.

Choose the correct options.​

Statement 1:Water pollution is any change in the water quality which makes it unsuitable for use by humans and by other living organisms.​

Statement 2: Oil spills are the only source of water pollution.

1. Neither statements are true
2. Only statement 2 is true
3. Only statement 1 is true
4. Both statements are true

Q.

What do you understand by rain water harvesting?

Q. is the most effective method of water conservation.

1. Building dams
2. Pest management
3. Rainwater harvesting
4. Sewage treatment