Question

6. Out of the following, select those that help to reduce water pollution
i. Use of sewers for removal of urban waste
ii. Use of unleaded petrol in Cars
iii. Spraying of pesticides on plants
iy. We should not excrete in open
a. i and i
b. iii and iv
c. i and iv
d. All of these
f​

Answer 1

Answer:

OPTION  C

C. i and iv