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Total Questions : 136 | Page 4 of 14 pages
Question 31.

Wireless communication is reflected back to the earth’s surface by the:

  1.    Troposphere
  2.    Stratosphere
  3.    Ionosphere
  4.    Exosphere
  5.    None of these
 Discuss Question
Answer: Option B. -> Stratosphere
Question 32.

The atmospheric layer closest to earth is:

  1.    Mesosphere
  2.    Hydrosphere
  3.    Thermosphere
  4.    Ionosphere
  5.    None of these
 Discuss Question
Answer: Option C. -> Thermosphere
Question 33.

Which one of the four regions above the earth has smallest height(km)?

  1.    Stratosphere
  2.    Mesosphere
  3.    Thermosphere
  4.    Troposphere
  5.    None of these
 Discuss Question
Answer: Option D. -> Troposphere
Question 34.

The lowest layer of the atmosphere.

  1.    Stratosphere
  2.    Thermosphere
  3.    Troposphere
  4.    Mesosphere
  5.    None of these
 Discuss Question
Answer: Option C. -> Troposphere
Question 35.

Most of the phenomena related with weather takes place in.

  1.    Stratosphere
  2.    Ionosphere
  3.    Mesosphere
  4.    Troposphere
  5.    None of these
 Discuss Question
Answer: Option D. -> Troposphere
Question 36. The January isotherm taken as a basis for dividing India into tropical and subtropical zones is
  1.    18ºC
  2.    15ºC
  3.    21ºC
  4.    12ºC
 Discuss Question
Answer: Option A. -> 18ºC
Answer: (a)
Question 37. October and November months give more rainfall to :
  1.    Chota Nagpur Plateau
  2.    Coromandal Coast
  3.    Malwa Plateau
  4.    Eastern Hills
 Discuss Question
Answer: Option B. -> Coromandal Coast
Answer: (b)
The Coromandel Coast of Tamil Nadu receives heavy rainfall from the retreating monsoon winds as the retreating winds are moisture-laden. It falls in the rain shadow of the Western Ghats and receives a good deal less rainfall during the summer southwest monsoon, which contributes heavily to rainfall in the rest of India.
The region averages 800 mm/year, most of which falls between October and December.
Question 38. Which showers are favourable to the rabi crops in Punjab during winter ?
  1.    Mango showers
  2.    Kal-baisakhi
  3.    Showers caused by Jet streams
  4.    Showers caused by western disturbances
 Discuss Question
Answer: Option D. -> Showers caused by western disturbances
Answer: (d)
Western Disturbance causes winter and pre-monsoon season rainfall across northwest India. Winter months Rainfall has great importance in agriculture, particularly for the rabi crops.
Wheat among them is one of the most important crops, which helps to meet India’s food security.
Question 39. Cyclones are more frequent in the coastal areas of Bay of Bengal, because
  1.    Water in the Bay of Bengal has chemicals which help in formation of cyclones
  2.    The conical shape of Bay of Bengal funnels cyclones Northwards when they are formed in the sea
  3.    High temperatures in the Bay of Bengal
  4.    Long chain of isand of Andaman and Nicobar acts as launching pad for cyclones
 Discuss Question
Answer: Option C. -> High temperatures in the Bay of Bengal
Answer: (c)
Question 40. Assertion (A):
The Monsoonal rainfall decreases as one goes toward the West and North-West in the Ganga plain.
Reason (R):
The moisture-bearing Monsoonal winds go higher as one moves up in the Ganga plain.
In the context of the above two statements which one of the following is correct?
  1.    Both (A) and (R) are true, but (R) is not the correct explanation of (A)
  2.    (A) is false, but (R) is true
  3.    Both (A) and (R) are true and (R) is the correct explanation of (A)
  4.    (A) is true, but (R) is false
 Discuss Question
Answer: Option C. -> Both (A) and (R) are true and (R) is the correct explanation of (A)
Answer: (c)

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