38500+ Important MCQs for AFCAT

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Learn AFCAT MCQs with answers [Page 1 of Department 103]

M

Mr. Dubey • 100.69K Points
Coach Physics

2) The advantage of AC over DC is that

  • (A) it is free from voltage fluctuations
  • (B) its generation costs much less
  • (C) it can be transmitted over long distances with minimum power loss
  • (D) it contains more electrical energy
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Correct Answer - Option (C)

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M

Mr. Dubey • 100.69K Points
Coach Physics

4) A veena player compares with a tuning fork the fundamental frequency generated by one of the strings of the veena and hears 4 beats per second. He then tightens the string a bit and hears only 3 beats per second. Then

  • (A) The string has a lower frequency and its tension has to be relaxed to make the frequencies equal
  • (B) The string has a higher frequency than the fork and has to be loosened for equality with fork
  • (C) The string has a higher frequency than the tuning fork and must be tightened more
  • (D) The string has a lower frequency than the tuning fork and must be tightened more to make the frequencies equal
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

M

Mr. Dubey • 100.69K Points
Coach Physics

5) For a given liquid, the rate of evaporation depends on
1.the temperature of the liquid
2.the temperature of air
3.the surface area of the liquid Which of the above factors is/are correct?

  • (A) 1, 2 and 3
  • (B) 1 only
  • (C) 2 and 3
  • (D) 1 and 2
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

M

Mr. Dubey • 100.69K Points
Coach Biology

7) What happens when a rose is illuminated with green light?

  • (A) The petals become warmer than the leaves.
  • (B) The leaves become warmer than the petals.
  • (C) Both petals and leaves remain unaffected.
  • (D) Both petals and leaves become equally warm.
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

M

Mr. Dubey • 100.69K Points
Coach Biology

9) Some flowering plants too are unable to photosynthesize and are, therefore, parasitic on other plants. Which of the following are such plants?
1.Beech drops
2.Broomrape
3.Dodder
4.Rafflesia Select the correct answer from the following:

  • (A) 1, 2, and 4
  • (B) 3 and 4
  • (C) 1, 2, 3, and 4
  • (D) 2, 3 and 4
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Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

M

Mr. Dubey • 100.69K Points
Coach Chemistry

10) A dark purple compound used as an antiseptic and disinfectant is

  • (A) Potassium permanganate
  • (B) Sodium thiosulphate
  • (C) Calcium phosphate
  • (D) Potassium nitrate
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Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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