Question

Sewage, a liquid domestic waste should be treated to:

1. meet the growing demand for water
2. reduce water pollution
3. safeguard public health
4. reduce the waste

Choose the correct option:

पर्याय

• 1, 2 and 3

• 2, 3 and 4

• 1, 3 and 4

• 4

Answer 1

1, 2 and 3