NCERT Solutions for Class 7 Chemistry Chapter 5 Water: A Precious Source

Water is a limited resource. It is needed for all living things and must be managed well to ensure we have enough for our needs and to protect our environment. Water is a precious resource. Clouds formed by this vapour ensure that water falls back down to Earth as rain, sleet, snow or hail. Water is found everywhere, but not everywhere; it is drinkable/ usable. Water helps in the nourishment of animals and plants. There are three primary sources of water: groundwater, surface water and rainwater.