Effects of Water Pollution

Q.

A lake with an inflow of domestic sewage rich in organic waste may result in:

1. Drying of the lake very soon due to algal bloom

2. An increased production of fish due to a lot of nutrients

3. Death of fish due to lack of oxygen

4. Oxygen supply of lake increasing drastically

Q.

Diseases such typhoid, cholera and jaundice are caused due to:

1. Water pollution

2. Soil contamination

3. Noise pollution

4. Air pollution

Q.

Contamination of rivers like Ganga leads to:

1. Impure water

2. Death of aquatic life

3. Acidic soil

4. Diseases

Q. Which of the following is a cause of water scarcity?

1. Extreme weather conditions
2. Over consumption of water
3. Lack of infrastructure to access water
4. Water pollution

Q. There used to be plenty of dolphins living in the Ganges river but now, very few are left. What could be the possible reason(s) for this?

1. Increase in the contamination level of the river.
2. Harmful chemicals released made the river water toxic.
3. Industrial effluents dumped degraded the health of the river.
4. River current increases significantly compared to sea.