Page 97 - Science - 5

3. The gas used in aerated drinks is called ___________ .

4. The purest form of water is ___________ .
5. The first layer of atmosphere is called ___________ .

Matching : Patching
Matching : Patching

Match the following :
Column ‘A’ Column ‘B’

1. Distilled water (a) 78 %
2. A layer of air around the Earth (b) Cleaning water by passing chlorine

through it
3. Nitrogen (c) Pure water

4. Oxygen (d) 21%
5. Chlorination (e) Atmosphere

Substituting Yourself
Substituting Yourself

Give one word for each of the following :

1. We feel with it. ____________________

2. We see with them. ____________________

3. We smell with it. ____________________

4. We taste with it. ____________________

5. We hear with them. ____________________

Brush Up Your Learning
Brush Up Your Learning

A. Answer the following questions briefly :
1. Which gas is used in chlorination to kill germs?

2. What are the major components of air?
3. What is decantation?

4. Which atmospheric layer contains the ozone layer?
B. Answer the following questions :

1. How does the atmosphere help us?

2. Name the gases present in air.
3. How is air pressure used in our daily lives?
4. How are soluble impurities removed from water?

5. How water is made safe for drinking before being supplied to our house ?

98
98
Discover 98 Science/5