Question

mannu was heating oil to fry potato chip the cooking oil all of sudden caught fire he period water to extinguish the fire do you think they action is suitable if yes why if no in such a condition what short mannu have done

Answer 1

No. Because water is not suitable for fires involving oil.
Manu should have switched off the flame of the burner and put a lid on the frying pan. By doing this the contact between fuel and oxygen is cut off and the flame will go off.

Answer 2

no as the water won't extinguish fire. instead of that he should have kept a heavy cloth like blanket on it.