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The living beings are dependent on water. It plays a vital role in the life of all living organisms. In our regular life we use water for cleaning, industrial manufacturing, hydroelectric power generation, transportation, etc due to which demand for freshwater is rapidly increasing which means that it’s our responsibility to use wisely and save water for our future.
Also Check: Causes of Water Scarcity
| Table of Content |
Key Terms: Water, Fluid, Source Of Water, Liquid Substance, Hydrogen, Oxygen, Ground Water, Surface Water
What Is Water?
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Water is a colourless, tasteless, odourless liquid substance formed with covalent bond of hydrogen and oxygen. Water has several improperties propertiesare to sustain life on earth. 71% of the earth’s surface is made up of this liquid.
Water
Uses Of Water
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Water is vital for living beings. Some of the significance source of water are specified below:
Water In Domestic Use
- Water is an important ingredient for cooking.
- Water is used for washing and cleaning.
- Water is used for personal hygeine.
- Water is used in gardening.
Also Check: Water Table
Water In Industry
- Water is specifically used in all the industries.
- In many industries water vapour is used.
- Water is required for the manufacturing of paper, steels, textile, food, dying and many more.
- Water is used in smelting facilities and petroleum refineries.
- Water is used for processing, diluting or fabricating a product.
- Water is use for generating electricity.
- Water is used in the extraction of minerals, oil, and gases.
- Water is used in mining.
Also Check: Water Pollution Control
Water In Medical Industry
- Water is used in hemodialysis
- Water is used in dental procedures.
- Water is essential for hydrotherapy.
Water In Agriculture Use
- A large quantities of water is used for growing fresh crops and sustaining livestock.
- Water is used for irrigation,frost control and crop cooling.
- Water is used for pesticide and fertiliser application.
- Plants uses water and sunlight for photosynthesis.
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| Content Related To Water | ||
|---|---|---|
| Importance of Water | Physical Properties of Water | Forms of Water |
Characteristics Of Water
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The specific characteistics of water are as follows:
- Water is a polar inorganic compound.
- The water molecule contains 2 hydrogen atoms and 1 oxygen atom.
- Water chemical formula is H2O.
- The freezing point of water is 0oC.
- The boiling point of water is 100oC
Also Check: Density of Water
Source Of Water
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Water is found naturally in our environment. Our earth is filled with approximately 97% of water but the amount of fresh water is only 3%. The 2.5% of fresh water is occupied in the form of glaciers, polar ice caps, atmosphere, and soil.
Also Read: Causes & Effects of Water Pollution
The source of water is:
- Surface water
- Underground water
- Rain water
- Ice glacier
Source Of Water
Properties Of Water
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The specific properties of water are:
- Water is polar.
- Water is a universal solvent.
- Water has high surface tension.
- Water has high specific heat capacity.
- Water is less dense as a solid than as a liquid
- Water cohesive and adhesive properties
Also Check:
| Chapter Related Topic | ||
|---|---|---|
| Conservation of Water | Water Cycle | Scarcity of Water |
Things To Remember
- Water plays a vital role in the life of all living organisms.
- Water is specifically used in all the industries.
- Water is used in smelting facilities and petroleum refineries.
- Water is a polar inorganic compound.
- Water is a universal solvent
- Water is found naturally in our environment.
Sample Questions
Ques. Where do we get drinking water from? (1 Mark)
Ans. There are two main source supplied to our home of drinking water. The groundwater is the water collected in the pores and spaces within rocks and aquifers second is surface water. It is obtained from rivers, lakes, reservoirs, streams, etc and groundwater is obtained by drilling wells and pumping it to the surface.
Ques. what are the characteristics of water? (3 Marks)
Ans. The specific characteistics of water are as follows:
- Water is a polar inorganic compound.
- The water molecule contains 2 hydrogen atoms and 1 oxygen atom.
- Water chemical formula is H2O.
- The freezing point of water is 0˚C.
- The boiling point of water is 100˚C
Ques. What are the main source of water? (2 Marks)
Ans. The source of water is:
- Surface water
- Underground water
- Rain water
- Ice glacier
Ques. List the uses of water in industry. (4 Marks)
Ans. The usage of water in industry are:
- Water is specifically used in all the industries.
- In many industries water vapour is used.
- Water is required for the manufacturing of paper, steels, textile, food, dying and many more.
- Water is used in smelting facilities and petroleum refineries.
- Water is used for processing, diluting or fabricating a product.
- Water is use for generating electricity.
- Water is used in the extraction of minerals, oil, and gases.
- Water is used in mining.
Ques. State the properties of water. (3 Marks)
Ans. The specific properties of water are:
- Water is polar.
- Water is a universal solvent.
- Water has high surface tension.
- Water has high specific heat capacity.
- Water is less dense as a solid than as a liquid
- Water cohesive and adhesive properties
Ques. What are the domestic uses of water? (2 Marks)
Ans. The domestic uses of water are:
- Water is an important ingredient for cooking.
- Water is used for washing and cleaning.
- Water is used for personal hygeine.
- Water is used in gardening.
Ques. State the uses of water? (7 Marks)
Ans. Water is vital for living beings. Some of the significance source of water are specified below:
Water In Domestic Use:
- Water is an important ingredient for cooking.
- Water is used for washing and cleaning.
- Water is used for personal hygeine.
- Water is used in gardening.
Water In Industry:
- Water is specifically used in all the industries.
- In many industries water vapour is used.
- Water is required for the manufacturing of paper, steels, textile, food, dying and many more.
- Water is used in smelting facilities and petroleum refineries.
- Water is used for processing, diluting or fabricating a product.
- Water is use for generating electricity.
- Water is used in the extraction of minerals, oil, and gases.
- Water is used in mining.
Water In Medical Industry:
- Water is used in hemodialysis
- Water is used in dental procedures.
- Water is essential for hydrotherapy.
Water In Agriculture Use:
- A large quantities of water is used for growing fresh crops and sustaining livestock.
- Water is used for irrigation,frost control and crop cooling.
- Water is used for pesticide and fertiliser application.
- Plants uses water and sunlight for photosynthesis.
Ques. What is the alternate name of water? (1 Mark)
Ans. Oxidane is the alternate name for water.
Ques. What is contaminated water? (2 Marks)
Ans. The water containing toxic chemicals and has low level of oxygen is termed as contaminated water. It is not suitable for drinking.
Ques. Name a few water borne diseases. (2 Marks)
Ans. Some of the most common water borne diseases in India are:
- Malaria.
- Typhoid.
- Cholera.
- Giardiasis.
- Amoebic Dysentery.
- Amoebiasis.
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