201. Which layer of the atmosphere reflects radio waves back to the earth's surface?
(a) Ionosphere-
(b) Ozone layer
(c) Stratosphere
(d) Troposphere
202. What percentage of insolation is received by the earth’s surface?
(a) 47%
(b) 51%-
(c) 66%
(d) 100%
203. Which region of the earth's surface receives the highest amount of insolation?
(a) Land masses
(b) Water bodies
(c) Equatorial region-
(d) Tropical desert
204. The term 'Flora' in the context of natural vegetation refer to______.
(a) Assemblage of plant species living in association with each other in a given environmental frame
(b) Plants of a particular region or period, listed by species and considered as a group-
(c) A large tract covered by trees and shrubs and its administration for assessing economic benefits
(d) Role played by species of animals in the maintenance of ecological balance
205. Which of the following countries leads in the production of aluminium and its products in the world?
(a) Australia
(b) France
(c) Pakistan
(d) U.S.A.-
206. Which of the following countries consumes more fish than any other country in the world?
(a) China-
(b) France
(c) Great Britain
(d) Japan
207. Which country leads in the production of copper in the world?
(a) Chile-
(b) Australia
(c) U.S.A.
(d) Russia
208. Which of the following types of coal contains over 90 per cent carbon and is smokeless?
(a) Anthracite-
(b) Bituminous coal
(c) Lignite
(d) Peat
209. The word “Tsunami” belongs to which of the following languages?
(a) English
(b) Latin
(c) Chinese
(d) Japanese-
210. Where is the largest Coral Reef located?
(a) Germany
(b) Australia-
(c) U.K.
(d) Canada
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