Physical Sciences MCQs (Set 1)

36. The length of an Earth day is determined by the time required for approximately one _____________.

  • A. Earth rotation
  • B. Earth revolution
  • C. Sun rotation
  • D. Sun revolution
View Answer
Correct Answer:
A. Earth rotation

Explanation:
……

37. What constitute current in a metal wire?

  • A. Electrons
  • B. Protons
  • C. Atoms
  • D. Molecules
View Answer
Correct Answer:
A. Electrons

Explanation:
……

38. In cold countries glycerol is added to water in car radiators as it helps to _____________________.

  • A. Lower the specific heat of water
  • B. Lower the viscosity of water
  • C. Lower the freezing point of water
  • D. Improve the lubricity
View Answer
Correct Answer:
C. Lower the freezing point of water

Explanation:
……

39. The fuse wire is generally made of ______________.

  • A. Silver
  • B. Copper
  • C. Tin-lead alloy
  • D. Silver and Copper
View Answer
Correct Answer:
C. Tin-lead alloy

Explanation:
……

40. Laws of electrolysis was given by ________________.

  • A. Faraday
  • B. Maxwell
  • C. Lenz
  • D. Bohr
View Answer
Correct Answer:
A. Faraday

Explanation:
……

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Bycrackgk.com

With the help of our interactive Idioms and Phrases MCQs tests, you may become completely engrossed in the world of idioms and phrases. Our MCQs include idioms ranging from the playful “raining cats and dogs” to the insightful “reading between the lines.” Enjoy studying as you go from beginner to expert levels, learning about different cultures as you go. Start today by examining the diversity of idioms!

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