Question

A. Choose the correct option
1. The zone marking change in composition and temperature is called a
a. pause
b. tropopause
c. atmosphere
2. The troposphere has the largest concentration of
a. oxygen
b. nitrogen
c. water vapour
d. atom
3. In the normal lapse rate of temperature, ...
a. temperature increases with altitude
b. temperature decreases with altitude
c. temperature remains constant everywhere d. temperature keeps fluctuating every moment
4. Clouds in the mesosphere are formed due to the presence of ......
a. moisture
b. smoke
c. cosmic dust
d. ultraviolet rays
•••••••••••••••••••••••
B. Fill in the blanks.
1. Layer of gases which envelops Earth is called...........
2. Air contains a variable amount of .................
about 1 to 4 per cent at least.
3. The upper limit of mesosphere is called the..............
4. The layer of atmosphere where airplanes fly is called ......
5. Meteors burn on entering the atmosphere, due to air resistance in the presence of..................​

Answer 1

Answer:

1 a

2 c

3 a

4 b

B

1 atmosphere

2 CO2

3 Exsophere

4 stratosphere

5

Answer 2

a

b

c

d

a

Explanation:

hopefully this will help you