6. What could be the main reason/reasons for the formation of the African and Eurasian desert belts?
1. It is located in the subtropical high-pressure cells.
2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct in this context?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Answer. a) 1 only
7. The jet aircraft fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?
1. There are no clouds or water vapor in the lower stratosphere.
2. There are no vertical winds in the lower stratosphere.
Which of the statements given above is/are correct in this context?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Answer. d) Neither 1 nor 2
8. The Brahmaputra, Irrawady, and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a “U” turn in its course to flow into India. This “U” turn is due to
a) Uplift of folded Himalayan series
b) Syntaxial bending of geologically young Himalayas
c) Geo-Tectonic disturbance in the tertiary folded mountain chains
d) Both (a) and (b) above
Answer. b) Syntaxial bending of geologically young Himalayas
9. A state in India has the following characteristics:
1. Its northern part is arid and semi-arid.
2. Its central part produces cotton.
3. Cultivation of cash crops is predominant over food crops.
Which one of the following states has all of the above characteristics?
a) Andhra Pradesh
b) Gujarat
c) Karnataka
d) Tamil Nadu
Answer. b) Gujarat
10. Two important rivers- one with its source in Jharkhand (and known by a different name in Odisha), and another, with its source in Odisha- merge at a place only a short distance from the coast of the Bay of Bengal before flowing into the sea. This is an important site of wildlife and biodiversity and a protected area. Which one of the following could be this?
a) Bhitarkanika
b) Chandipur-on-sea
c) Gopalpur-on-sea
d) Simlipal
Answer. a) Bhitarkanika
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