22500+ Important MCQs for NDA

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Learn NDA MCQs with answers [Page 2 of Department 65]

M

Mr. Dubey • 100.69K Points
Coach Geography

11) In an artesian well, in what order the rock-layer are generally found? (from bottom to surface)

  • (A) Permeable, non-permeable and permeable
  • (B) Non-permeable and permeable
  • (C) Permeable and non- permeable
  • (D) Non-permeable, permeable and non-permeable
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Correct Answer - Option (D)

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M

Mr. Dubey • 100.69K Points
Coach Geography

12) Which central government agency is responsible for the mapping and exploration of minerals?

  • (A) The Geological Survey of India
  • (B) Surveyor General of India
  • (C) National Mineral Development Corporation Ltd
  • (D) Indian Bureau of Mines
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Correct Answer - Option (A)

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A

Ankit Singh • 6.54K Points
Tutor III Physics

13) A small gap is left at the joints of rails in a railway track to

  • (A) Avoid the tracks being distorted due to seasonal temperature variation
  • (B) Avoid the heating of tracks to high temperature
  • (C) Control the speed of train
  • (D) Keep the rails equidistant
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Correct Answer - Option (A)

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A

Ankit Singh • 6.54K Points
Tutor III Physics

14) Pipelines in cold countries often burst in winter, because

  • (A) Water freezes and expands in its volume
  • (B) Temperature of ice is less than that of water
  • (C) Pipelines contract in their volume
  • (D) Pipelines expand due to freezing
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Correct Answer - Option (A)

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A

Ankit Singh • 6.54K Points
Tutor III Physics

15) In severe winter, in cold countries water pipes burst because

  • (A) Water expands on freezing
  • (B) Contraction of water pipes
  • (C) High atmospheric pressure
  • (D) Combined effect of all the above three
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Correct Answer - Option (A)

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A

Ankit Singh • 6.54K Points
Tutor III Physics

16) Railway tracks are banked on curves so that

  • (A) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train
  • (B) No frictional force may be produced between the tracks and the wheels of the train
  • (C) Necessary centripetal force may be obtained from the horizontal component of the weight of the train
  • (D) The train may not fall down inwards
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Correct Answer - Option (C)

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A

Ankit Singh • 6.54K Points
Tutor III Physics

17) The density of the liquid when heated

  • (A) Decreases
  • (B) Increases
  • (C) Does not change
  • (D) May increase of decrease depending on pressure
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Correct Answer - Option (A)

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