Question : Which of the following is a method of water conservation?

Option 1: Deforestation to increase water runoff

Option 2: Constructing large dams in every river

Option 3: Using drip irrigation in agriculture

Option 4: Increasing industrial water discharge

Question : When a stone is thrown into the calm water of a pond, the waves produced on the surface of the water in the pond are:

Option 1: Longitudinal

Option 2: Transverse

Option 3: Both longitudinal and transverse

Option 4: Waves are not produced