1601. Which of the following metals contribute to to biomagnifications problem in the ecosystem?
A. Mercury
B. Chromium
C. (4) Copper
D. (4) Lead
✅ The correct answer is option A.
UPSC
1602. Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to –
A. multiple cropping
B. plantation agriculture
C. terrace farming
D. extensive farming
✅ The correct answer is option B.
1603. Soil factors are otherwise known as :
A. Edaphic factors
B. Biotic factors
C. Physiographic factors
D. Climatic factors
✅ The correct answer is option A.
1604. The largest reservoir of fresh water is :
A. Glaciers
B. Ground Water
C. Ponds
D. Lakes
✅ The correct answer is option A.
1605. How much of world’s surface is covered by water?
A. 55%
B. 70%
C. 80%
D. 25%
✅ The correct answer is option B.
1606. In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere
✅ The correct answer is option B.
1607. Most of the ozone in the earth’s atmosphere is found in the:
A. Troposphere
B. Stratosphere
C. Mesophere
D. Thermosphere
✅ The correct answer is option B.
1608. 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.
1609. Which of the following is the uppermost layer of the atmosphere?
A. Stratosphere
B. Mesosphere
C. Ionosphere
D. Exosphere
✅ The correct answer is option D.
1610. Which is the warmest layer of the atmosphere?
A. Thermosphere
B. Troposphere
C. Stratosphere
D. Mesosphere
✅ The correct answer is option A.