Question

G. Give reasons.
1. Water droplets are seen on the outer surface of any
2. CNG is the most prefered fuel nowadays.
3. Carbon dioxide is used in fire extinguishers.
4. Plants can synthesise their food only in the day.​

Answer 1

Answer:

1. When a cold soft drink bottle is kept in open air,the water vapour present in the surrounding air condenses on the bottle. The water molecules are slowed down and stick to the surface is cold. These water droplets are seen as dew on the surface of the bottle.

2. CNG burns cleaner when compared to traditional petrol and diesel. Carbon monoxide emissions are reduced by roughly 80 percent, and 44 percent less hydrocarbons are produced in comparison to gasoline-powered vehicles. ... CNG cars also run quieter than gasoline and diesel vehicles, which results in less noise pollution.

3. Because it forms a blanket around fire and cut of air supply and fire gets extinguished.

4. Because they get sunlight only during day

Answer 2

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