Water Short Question With Answer: General Science Cadet College Test
[toggle title=”Q.No.01: Define Glaciers?” state=”close”] Ans: Snow makes ice sheets on the mountain. These ice sheets are called glaciers. [/toggle]
[toggle title=”Q.No.02: What do you mean by wetland?” state=”close”] Ans: Water stays for a part of the year and makes the low ground wet. Such places are called wetlands. Pugri, KurandKhar are few wet places in Sindh province. [/toggle]
[toggle title=”Q.No.03: How water table level changes during the year?” state=”close”] Ans: The level of the water table changes during the year. It rises in the rains, and lowers in the drought. People dig wells to bring groundwater to the surface. [/toggle]
[toggle title=”Q.No.04: How pollutants help in the growth of algae?” state=”close”] Ans: Acid and salts are water soluble pollutants that help in the growth of algae. The presence of algae on the upper surface of water blocks the sunlight. Aquatic plants cannot make their food, they die. [/toggle]
[toggle title=”Q.No.05: How fertilizers cause water pollution?” state=”close”] Ans: Farmers use fertilizers in their crops. The rainwater carries these chemicals to water resources and causes water pollution. [/toggle]
[toggle title=”Q.No.06: Differentiate b/w soft and hard water?” state=”close”] Ans: The water which gives much lather with soap is called soft water. Soft water is used in homes.
The water which does not give much lather with soap is called hard water. Sea water is hard water. [/toggle]
[toggle title=”Q.No.07: Which chemicals convert water into hard water?” state=”close”] Ans: When chlorides, sulfate and bicarbonates of calcium and magnesium dissolve in water, it becomes hard water. [/toggle]
[toggle title=”Q.No.08: Define purification of water?” state=”close”] Ans: The process of removing germs, tonic, salts and other impurities from the water is called purification of water.[/toggle]
[toggle title=”Q.No.09: How the process of filtration occurs?” state=”close”] Ans: The impure water is passed through a filter paper. Suspended particles and insoluble salts are left on the filter paper whereas clean water is obtained in the beaker. [/toggle]
[toggle title=”Q.No.10: What is chlorination?” state=”close”] Ans: The household bleach is used to purify the water. Bleach contains chlorine which kills the microorganisms by producing atomic oxygen. [/toggle]
[toggle title=”Q.No.11: How can we clean water with potassium?” state=”close”] Ans: Add powder of potassium in water. It will settle down the impurities like clay, sand or other suspended impurities. Water will be pure by decantation. [/toggle]
[toggle title=”Q.No.12: Define condenser?” state=”close”] Ans: Water is boiled in a closed container like a flask. These vapors are passed through a pipe called condenser. [/toggle]
[toggle title=”Q.No.13: Write the use of water in industries?” state=”close”] Ans: Water is used as raw material in beverage and food industries. Factories use water to clean and wash metal surfaces. Heavy mechanical complexes use water in oil refineries & nuclear reactors. [/toggle]
[toggle title=”Q.No.14: How electricity is produced by water? ” state=”close”] Ans: The potential energy of water is used to produce hydroelectricity. This potential energy runs turbines. Then these turbines run generators which produce electricity. [/toggle]
[toggle title=”Q.No.15: Write few methods to conserve water?” state=”close”] Ans: Turn off tap when you brush your teeth or take water in a tumbler.
Wash fruits & vegetables in a bowl.
Only use a washing machine with a full load. [/toggle]
