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GeographyEasyAsked in: CDS · CDS-II 2019, GK

Which one of the following is not correct regarding South India ?

  1. A.Diurnal range of temperature is less
  2. B.Annual range of temperature is less
  3. C.Temperature is high throughout the year
  4. D.Extreme climatic conditions are found

Correct answer

D. Extreme climatic conditions are found

Explanation

The correct answer is D, Extreme climatic conditions are found. South India has an equable, maritime climate, not an extreme one, because it lies close to the equator and is surrounded by the sea on three sides.

Peninsular India sits largely within the tropics, so the Sun is high overhead all year and temperatures stay warm in every season. The Arabian Sea, Bay of Bengal and Indian Ocean moderate the climate: water heats and cools slowly, so the difference between day and night temperatures and between summer and winter is small. Chennai or Thiruvananthapuram may have an annual range of only a few degrees. North India, far from the sea, has a continental climate, with very hot summers, cold winters and a large range of temperature.

Option A is wrong because the statement is correct: the diurnal range is low near the sea. Option B is wrong because the annual range of temperature is also small. Option C is wrong because temperatures are indeed high throughout the year in the south.

Exam tip: Coast and south equable, small range; interior north continental, large range.

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Q2.GeographyAsked in: NDA · NDA-I 2025, GATMedium

Which of the following is/are the applied forces in mechanical weathering process? 1. Gravitational force 2. Expansion force 3. Force due to water pressure Select the answer using the code given below :

  1. A.1 only
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: D. 1, 2 and 3

Mechanical (physical) weathering breaks rocks without changing their chemistry, and all three forces drive it. Gravitational forces act as overburden pressure, load and shearing stress on rocks.

Q4.GeographyAsked in: UPSC Civil Services · CSE Prelims 2018, GS Paper IMedium

Consider the following statements : 1. The Earth's magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. 3. When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct ?

  1. A.1 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
Show answer
Correct answer: C. 1 and 3 only

The magnetic field has flipped many times and life changed the early air, but the young Earth had almost no free oxygen.

Q5.GeographyAsked in: UPSC Civil Services · CSE Prelims 2020, GS Paper IHard

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements : 1. A substantial saving in seed material is made when 'bud chip settlings' are raised in a nursery and transplanted in the main field. 2. When direct planting of setts is done, the germination percentage is better with single-budded setts as compared to setts with many buds. 3. If bad weather conditions prevail when setts are directly planted, single-budded setts have better survival as compared to large setts. 4. Sugarcane can be cultivated using settlings prepared from tissue culture. Which of the statements given above is/are correct?

  1. A.1 and 2 only
  2. B.3 only
  3. C.1 and 4 only
  4. D.2, 3 and 4 only
Show answer
Correct answer: C. 1 and 4 only

Bud chip nurseries save seed cane and tissue-culture settlings are used, but single-bud setts do worse than larger setts when planted directly.