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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

Fill in the blanks :1. Only _______ percent of natural water is available for human consumption.2. The process of changing water into its vapour is called _______3. _______ is built on rivers to regulate water flow and distribute water.4. Water levels in rivers increase greatly during _______ 5. Water cycle is also called as _______

Answer»

1. 0.3

2. Evaporation

3. Dam

4. Raining

5.. Hydrological cycle
Discussion
2.

About 30% of the freshwater is found in?a. glaciersb. groundwaterc. other sources of waterd. 0.3%

Answer»

Correct answer isb. groundwater
Discussion
3.

The freshwater available on earth is only 3%. We cannot increase the amount of water. In thatcase, how can sustain the water level?

Answer»

1. The sewage water treatment is to be adopted.

2. Decrease the usage of pesticides, insecticides, and fertilizers in agriculture.

3. Protect forest and trees.

4. Adopt drip irrigation and sprinkler irrigation in agriculture.

5. Rainwater harvesting should be implemented in every building.

6. Create awareness about the impact of throwing wastes into the water bodies.
Discussion
4.

Around 97% of water available on earth is _______ water.(a) fresh(b) pure(c) Salty(d) polluted

Answer»

Correct answer is(c) Salty
Discussion
5.

Crossword :DOWN:1. A method of water conservation.2. Process of getting water vapour from sea water.6. Water stored in dams is used for generation of _____ACROSS3. _______ is a large body of non-potable waterfound in nature.4. In summer, the body loses water as _______5. Plants undergo _______ and contribute to water cycle.

Answer»

Down:

1. Recycling

2. Evaporation

6. Electricity

Across:

3. Ocean

4. Sweat

5. Transpiration
Discussion
6.

List the wet lands in Tamilnadu.

Answer»

1. Pichavaram Mangroves near Chidambaram.

2. Muthupet Mangrove wet-land.

3. Pallikkaranai wet-land in Chennai.

4. Chembarambakkam in Kancheepuram are a few examples of swamps in Tamilnadu
Discussion
7.

Define – Scarcity of water.

Answer»

There is no change in.the total quantity of water available on the earth. It remains the same. But the water useful for plants, animals and man is decreasing day by day. It is called Scarcity of water.
Discussion
8.

What is frozen water?

Answer»

Water that is present in the frozen form as polar ice caps and glaciers are called frozen water. A large portion of water is 68.7% of the total available fresh water is in frozen state.
Discussion
9.

What is transpiration?

Answer»

It is the process of loss of water from the aerial parts of a plant in vapour form. This is called transpriation.
Discussion
10.

Give the importance of water.

Answer»

The importance of water:

  1. Our body uses water in all its cells, organs and tissues to help regulate its temperature and maintain other bodily functions.
  2. On an average, the human body requires 2-3 litres of water per day for proper functioning.
  3. Water helps in digestion of food and removal of toxins from the body.
  4. Water is used in the domestic activities like cooking, bathing, washing clothes, washing utensils, keeping houses and common places clean, watering plants, etc.
  5. It is also essential for the healthy growth of farm crops and farm stock and is used in the manufacture of many products.
  6. Industry depends on water at all levels of production.
Discussion
11.

What are the methods of water conservation? Explain?

Answer»

1. Water management :

  • Bringing awareness to the people.
  • Recycling water by separating pollutants.
  • Minimize the use of fertilizers.
  • Controlling deforestation.
  • Adopt drip and sprinkler irrigation in agriculture.

2. Rainwater harvesting:

  • Collecting water from where it falls:
  • Collecting water from the roof tops.
  • Collecting flowing rain water :
  • Collecting rain water by constructing dams.
Discussion
12.

Draw and describe the total water on earth by pie chart.

Answer»

If the total water on earth be 100%, let’s see what percent would be the availability of fresh water. Look at the pie chart given below.

From the pie chart, it can also be noted that 97% water is saline water. Only 3% found is the freshwater and that too in polar ice caps and glaciers. So this portion of water is not readily available for drinking.

The distribution of the totally available (3%) freshwater is as follows:

Polar ice caps and glaciers – 68.7%

Ground water – 30.1 %

Other source of water – 0.9%

Surface water – 0.3%

The distribution of total 0.3% of surface water is as follows:

Lakes – 87%

Rivers – 2%

Swamps – 11%

Thus the above pie chart explains that we have a very small amount of fresh water available for human usuage and so maintaining the water table and the conservation of water is very essential.
Discussion