A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere
✅ The correct answer is option B.
143. Which one of the following pairs is not correctly matched?
A. lchadar – Zonal soil
B. Podzol – Zonal soil
C. Chestnut – Zonal soil
D. Bhangar – Azonal soil
✅ The correct answer is option A.
139. The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A. Lithosphere
B. Biosphere
C. Hydrosphere
D. Atmosphere
✅ The correct answer is option B.
137. Which one of the following practices is adopted for restoring the fertility of soil?
A. Weeding
B. Levelling
C. (2) sweet jowar
D. (4) Harrowing
✅ The correct answer is option B.
135. Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A. Wheat
B. Maize
C. Rice
D. Barley
✅ The correct answer is option C.
133. The narrow stretch of water connecting two Seas is called –
A. Bay
B. Peninsula
C. Isthamus
D. Strait
✅ The correct answer is option D.
131. The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A. Isthumus
B. oceanic ridge
C. continental shelf
D. continental slope
✅ The correct answer is option C.
130. Ozone-hole in the atmosphere is largely caused by the presence of –
A. Oxygen
B. Hydrogen
C. Chlorofluorocarbons
D. Radio-active waste
✅ The correct answer is option C.
129. The term Roaring Forties is related to the –
A. Trade winds
B. Planetary winds
C. Westerlies
D. Polar winds
✅ The correct answer is option C.
128. Which one of the following is not the example of planetary winds?
A. Monsoon
B. Trade wind
C. Land and sea breezes
D. Chinook
✅ The correct answer is option D.