Water Conservation and Management

Yes, it is correct. Well is the best and most used source of potable water in villages. Well is constructed to access the underground water.

Yes, it is correct. The term recharging the ground water means, conserving the ground water, allowing the rain water and excess of waste water to seep into the ground. This increases the level of the water table.

Yes, it is correct. Maximum number of plants can be watered with very little water, as the pipe is pierced at various places and arranged in a manner that the water reaches the roots of the plants.

Plants are grown along river banks primarily to reduce soil erosion and silting. Their root systems hold the soil in place, preventing it from being washed away by water flow. They don't primarily control pollution, provide shade, or prevent floods.

A well is a structure that accesses groundwater stored underground in aquifers by digging or drilling. Seas, lakes, and rivers are all surface water bodies, not underground water sources.

Irrigation by drops is one of the irrigation methods which can minimise the wastage of water.

Water scarcity results in drying up of ponds, lakes, failure of crops and poor health of living organisms. But, rapid industrialisation is not an effect of water scarcity.

Option (2) is incorrect.

It is heartening to see the revival of traditional water harvesting systems in various ecological zones of India. Communities in the face of adversity have revived or created new water harvesting systems. They have made checkdams, johads and other structures to harvest every drop of rain. Khadin, Surangam and Eris are ancient water harvesting systems.

Fresh water sources have low salt concentrations suitable for drinking and irrigation. Seas contain saltwater and are not freshwater sources. Ponds, rivers, and lakes are all bodies of fresh water that cycle through the Earth's hydrological system.

Watershed management involves building of small check dams which leads to an increase in ground water levels. These check dams stop rain water from flowing away and also reduce soil erosion.

This is the correct answer. In river lift system, water is directly drawn from the rivers for supplementing irrigation in areas close to rivers. 

This is the correct option as atmosphere forms the smallest global reservoir of water.

This is the correct answer as this statement is incorrect. An area drained by a river and its tributaries is called a drainage basin.

This is the correct matching. Dendritic pattern is resembling the branches of a tree. Radial pattern is where rivers originate from a hill and flow in all directions. Trellis pattern is where primary tributaries of rivers flow parallel to each other and secondary tributaries join them at right angles. Centripetal pattern is where rivers discharge their waters from all directions in a lake or depression.