Multiple Choice QuestionsThe mean sea - level pressure of the atmosphere decreases by half at the altitude by :
6km
8 km
10 km
12 km
The fall in temperature in troposphere is known as :
Adiabatic rate
Lapse rate
Temperature rate
Thermal loss
Which one of the following atmospheric layers reflect radio waves that are transmitted from the earth and again back to the earth ?
Mesosphere
Ionosphere
Troposphere
Stratosphere
Which one of the following is devoid of atmosphere ?
Mesosphere
Stratosphere
Magnetosphere
Thermosphere
ASSERTION (A) :Presence of CO2 in the earth's atmosphere is essential.
REASON (R) : CO2 can absorb heat.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but is not the correct explanation of (A).
(A) is true , but (R) is false.
(A) is false , but (R) is true.
|
LIST I (Gases in the atmosphere above 1000 km altitude) |
LIST II (Altitudinal range) |
| (a) Nitrogen | (1) 200 - 1100 km |
| (b) Oxygen | (2) 1100 - 3500 km |
| (c) Helium | (3) 100 - 200 km |
| (d) Hydrogen | (4) 3500 km and above |
a-iv , b-ii , c-i , d-iii
a-iii , b-i , c-ii , d-iv
a-iii , b-ii , c-i , d-iv
a-ii , b-i , c-iii , d-iv
ASSERTION (A) : Tropical cyclones have a life span of about one week time.
REASON (R) : They can produce low amount of rainfall due to low atmospheric pressure.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true , but (R) is the correct explanation of (A).
(A) is true , but (R) is false,
(A) is false , but (R) is false.
Which one of the following is essential for the formation of equatorial westerlies ?
Large - scale earthquake over the equator .
Shifting of trade winds towards poles .
Shifting of polar easterlies towards equator .
Large - scale forest - fire in the equatorial rain forest .
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