36500+ Important MCQs for RAILWAY

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Learn RAILWAY MCQs with answers [Page -78 of Department 88]

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-788) A white and smooth surface is

  • (A) Good absorber and good reflector of heat
  • (B) Bad absorber and good reflector of heat
  • (C) Good absorber and bad reflector of heat
  • (D) Bad absorber and bad reflector of heat
Correct Answer - Option (B)

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

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-786) The direction of heat flow between two objects depends on

  • (A) Their masses
  • (B) Their heat contents
  • (C) Their temperatures
  • (D) Whether they are in solid, liquid or gaseous state
Correct Answer - Option (C)

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

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-785) Woollen cloth protects the body from cold because

  • (A) It is a good conductor of heat
  • (B) It is a poor conductor of heat
  • (C) External heat rays enter into the body through the woollen cloth
  • (D) It reflects heat
Correct Answer - Option (B)

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

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-784) Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted.

  • (A) Rough white
  • (B) Rough black
  • (C) Shining white
  • (D) Shining black
Correct Answer - Option (B)

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

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-783) Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted.

  • (A) Rough white
  • (B) Rough black
  • (C) Shining white
  • (D) Shining black
Correct Answer - Option (B)

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

I

Indresh Gehalot • 10.11K Points
Tutor II Physics

-782) Which of the following criterion is used for any metal to be used as a cooking material ?

  • (A) More specific heat
  • (B) More thermal conductivity
  • (C) Less thermal conductivity
  • (D) Less electrical conductivity
Correct Answer - Option (C)

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

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