271. The tribal population in Andaman and Nicobar Islands belongs to the A. Astraloids B. Caucasoids C. Mongoloids D. Negroids ✅ The correct answer is option D.
272. The soils of the plains have not been derived A. from the Himalayan rocks B. from the Peninsular rocks C. only from the rocks existing locally D. from material brought by the rivers ✅ The correct answer is option C.
273. In our country, the Tropic of Cancer passes through the A. Central part B. Northern part C. Southern part D. Western part ✅ The correct answer is option A.
274. Which of the following states has very little alluvial soil? A. Bihar B. Madhya Pradesh C. Tamil Nadu D. Punjab ✅ The correct answer is option B.
275. The Cudappah Ranges lie between A. Godavari and Palkonda Range B. Godavari and Jamshedpur C. Palar and Cauvery D. Satpura and Mohadeo-Maikal range ✅ The correct answer is option A.
276. Which of the weathering agents is almost peculiar to the Indian Himalayas? A. Wind B. Glaciers C. Snowfall D. Running water ✅ The correct answer is option B.
277. Which of the following is not a part of the Great Plains? A. Indo-Gangetic Divide B. Ganga Delta C. Assam Valley D. Kerala Coastal Plain ✅ The correct answer is option D.
278. Which of the following indicates the types of soil erosion in decreasing order of damage caused In India A. Ravine erosion .and gullies, alkalinity and salinity weeds and water-logging B. Alkalinity and water-logging, ravine erosion and weeds C. Water-logging, weeds, salinity and ravine erosion D. All are equally damaging ✅ The correct answer is option A.
279. The minimum fore at cover necessary to maintain ecological balance is A. 50% of the total land area B. 40% of the total land area C. 33% of the total land area D. 25% of the total land area ✅ The correct answer is option C.
280. Rajasthan receives very little rain because A. it is too hot B. there is no water available and thus the winds remain dry C. the monsoons fail to reach this area D. the winds do not come across any barrier to cause the necessary uplift to cool the winds ✅ The correct answer is option D.