Question

Chemistry
-
gas is an important component of proteins in living organisms.
2. Burning is also called
3. Circle the odd one out.
a) oxygen, carbon dioxide, sulphur dioxide.
b) nitrogen, carbon dioxide, helium
c) neon, argon, oxygen.
d) respiration, combustion, photosynthesis.
e) deforestation, automobile exhaust, photosynthesis.
4. Nitrogen supports burning. (True / Flase)
5. Define atmosphere and name the five layers of the atmosphere.​

Answer 1

1. Nitrogen.

2. Combustion

3.

a) sulphur dioxide

b) helium

c) Oxygen

d) photosynthesis

e) automobile exhaust

4. False

5. Atmosphere is the blanket of gases or air that surrounds the Earth and is held in place due to Earth's gravity.

The layers of atmosphere are,

Troposphere

Stratosphere ( consists ozone layer )

Mesosphere

Thermosphere

Exosphere

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