59 + Interview Questions in COMPOSITION IN GENERAL AWARENESS Page 2 InterviewSolution

51.

Match the following.AB1. Troposphere(i) ozone2. Stratosphere(ii) lons3. Thermosphere(iii)outer space4. Exosphere(iv) Lowest temperature5. Mesosphere (v) Densest layer of atmosphere

Answer»

A	B
1. Troposphere	(v) Densest layer of atmosphere
2. Stratosphere	(i) ozone
3. Thermosphere	(ii) lons
4. Exosphere	(iii)outer space
5. Mesosphere	(iv) Lowest temperature

52.	What is known as the Antarctic ozone hole ?
Answer» Ozone hole above the Antarctic region was detected by NASA in the USA. This is due to the emission of CFCs etc. and absence of vegetation cover along Antarctic. CFCs deplete the ozone amount and there is no oxygen addition due to absence of vegetation realm.

53.	How is the atmosphere kept in place around the earth?
Answer» The atmosphere is kept in place around the planet by another invisible entity called gravity.

54.	This layer of the atmosphere has the lowest temperature.1. Mesosphere2. Thermosphere3. Tropopause4. Stratosphere
Answer» 1. Mesosphere

55.	State any three characteristics of the mesosphere.
Answer» The main characteristics of mesosphere are : 1. It extends from the top of stratosphere upto a height of 80 km above the earth. 2. This layer has lowest temperature in the atmosphere reaches -100°C at its end. 3. Most meteors from space burn up in this layer.

55.

Answer»

The main characteristics of mesosphere are :

1. It extends from the top of stratosphere upto a height of 80 km above the earth.

2. This layer has lowest temperature in the atmosphere reaches -100°C at its end.

3. Most meteors from space burn up in this layer.

56.	State any three characteristics of the stratosphere.
Answer» The main characteristics of stratosphere are: (a) There are no clouds or weather changes so it is safe for air travel. (b) It extends from the top of troposphere up to 50 km above the surface of earth. (c) This layer has a band of ozone gas which protects us from sun’s harmful ultraviolet rays.

56.

Answer»

The main characteristics of stratosphere are:

(a) There are no clouds or weather changes so it is safe for air travel.

(b) It extends from the top of troposphere up to 50 km above the surface of earth.

(c) This layer has a band of ozone gas which protects us from sun’s harmful ultraviolet rays.

57.	What is the troposphere?
Answer» Troposphere is the lowest layer of the atmosphere. It protects us from the heat of sun during day and keeps the earth warm at night ozone. This is the densest layer of the atmosphere and its thickness varies from 8 km over the poles to 18 km over the equator.

58.	What is leading to depletion of ozone layer in the atmosphere ?
Answer» Excessive emission of carbon monoxide and CFCs from industries and vehicles take out the oxygen from ozone layer to form different compounds (oxides). In this way the depletion of ozone layer takes place.

59.	What is the difference between the troposphere and the tropopause?
Answer» The lowest layer of atmosphere is called troposphere where as the boundary between the troposphere and the stratosphere is called tropopause.