Test: Water: A Precious Resource - Class 7 MCQ

Oxygen is a gas, not a form of water.

Evaporation is the process by which water changes from a liquid to a gas.

Surface water refers to water bodies on the Earth's surface, such as rivers, lakes, and oceans.

Underground water mainly comes from the recharge of rainwater and other surface water sources that seep into the ground.

The natural distribution of water in India is primarily influenced by the monsoon season.

Dams are human-made structures built across rivers to store water.

High population density leads to increased water demand and can result in water scarcity.

Water scarcity can lead to drought conditions, which negatively affect plant growth and productivity.

Fixing leaks and dripping taps helps to prevent water wastage and conserve water at home.

Rainwater harvesting involves collecting and storing rainwater for later use, such as irrigation or domestic purposes.

Creating flood barriers helpsto prevent or reduce the loss of water during floods.

Improving irrigation methods helps to ensure that crops receive adequate water, which can improve their yield.

Flood irrigation involves flooding fields with water, which can result in water wastage and is therefore not an effective method of water conservation in agriculture.

Condensation is the process by which water changes from a gas to a liquid.

Rainwater harvesting involves collecting and storing rainwater, which does not contribute to water pollution.

Recycling water helps to conserve water resources by reusing treated wastewater for non-potable purposes.

Rainwater harvesting involves collecting and storing rainwater, which can reduce the risk of floods by diverting excess water away from urban areas.

Rivers are natural sources of water, which flow from higher elevations to lower elevations.

Melting is the process by which water changes from a solid to a liquid.

Reducing water usage through efficient water management practices is the most effective way to conserve water resources.