Water Pollution

Q.
In Madhya Pradesh, a river 'X' has cut through white marble in Bhedaghat to form a beautiful gorge. This presents an enchanting scene during full moon nights, sunrises, and sunsets. Which river is this?

1. Ganga
2. Krishna
3. Brahmaputra
4. Narmada

Q. Sort the following stages of formation of ox-bow lakes from top to bottom.

1. River in plains
2. Curving of river
3. Meanders
4. Merging of curve
5. Ox-Bow lake

Q. Which of the following have harmful effects on both human and aquatic life?

1. Soil pollution
2. Noise pollution
3. Air pollution
4. Water pollution

Q.

Give one word for :

Presence of harmful matter in water.

Q.

Discuss the three methods of controlling water pollution.

Q. Select the methods to reduce water pollution.

1. Waste water treatment
2. Cleaning drinking water sources
3. Contamination of soil and air
4. Using fossil fuels

Q. Mention about the industries where waste can be reused.

Q. Water pollution causes various diseases like ___________.

1. All of the above
2. Vomiting
3. Cholera
4. Jaundice

Q. Sea water is often polluted due to oil spills.

1. True
2. False

Q. Water used in the manufacturing process becomes impure/polluted and it is drained into __________.

1. Streams
2. Rivers
3. All of the above
4. Ground