162. Asia is the biggest continent of the World. It covers an area of about ______?
(a) 36%
(b) 42%
(c) 29.5%
(d) 38.5%
163. The approximate percentage of oxygen in the atmospheric air is ______?
(a) 11%
(b) 21%
(c) 31%
(d) 41%
164. The frozen continent around the S-pole is ______?
(a) Iceland
(b) Antarctica
(c) Arctic
(d) Greenland
165. Which one of the following countries is NOT land-locked ______?
(a) Switzerland
(b) Burma
(c) Afghanistan
(d) Nepal
166. North America is the third (3rd) largest continent of the world. Percentage of population accommodated by North America ______?
(a) 5.5%
(b) 6.6%
(c) 7.7%
(d) 8.8%
167. Which one of the following terms is not connected with the study of climate ______?
(a) Stevenson Screen
(b) Flash Point
(c) Dew Point
(d) Hydrogram
168. Cirrus clouds are ______?
(a) Medium height clouds
(b) Low clouds
(c) High clouds
(d) Very low clouds
169. Climate is the average atmospheric conditions of an area over a considerable period of time. For proper conclusions, observations are needed for a minimum period of ______?
(a) 5 years
(b) 15 years
(c) 25 years
(d) 35 years
170. The soil which is a mixture of sand, clay and silt is called as ______?