A) mosquito larvae get asphyxiated (cannot breath)
B) water becomes impure for mosquito
C) specific gravity of water increases
D) oils kills malarial parasite in mosquitoes
Correct Answer: A
Solution :
Oil being lighter than water floats upon the water surface forming a thin layer over the stagnant water surface thereby disconnecting the oxygen supply to the water. Therefore the mosquito larva present in water cannot breathe and dies.
You need to login to perform this action.
You will be redirected in
3 sec
