Question

Mosquito can be controlled by the following method except by(a) Adding chlorine to water (b) covering water tank (c) draining stagnant water (d) spreading oil on the surface of water

Answer 1

Explanation:

right answer is (b)covering water tank

Answer 2

Explanation:

1.covering water tanks

2.spreading oil 9n the surface of water

3.draining stagnation water

So the options are C B D