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Which of the following does not cause a reduction of…

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Which of the following does not cause a reduction of the surface tension of water?

A. soap solution

B. detergent

C. alcohol

D. grease

QUICK ANSWER…

D

EXPLANATION…

Surface tension is a property of water surface that forms a kind of thin protective layer due to cohesive attractions of the surface molecules.

Application of soap, detergent and alcohol can reduce surface tension of water. However, addition of grease will in fact worsen the surface tension of water.

Now for the right answer to the above question:

  1. Option A is incorrect. soap solution will dissolve the surface coatings.
  2. Option B is incorrect. detergent will also dissolve any cohesive coating.
  3. C is incorrect. alcohol will also cause a reduced surface tension.
  4. D is the correct answer. Grease will increase the tension of the water surface.
RELATED!  When the temperature... its surface tension

HELPFUL TIPS…

You may please note these/this:

  • Oils generally and other non-polar solvents will only serve to increase and not reduce the surface tension of water.

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/ culled from 2016 JAMB-UTME physics past question 39 /

Which of the following does not cause a reduction of... » QuizTablet
Which of the following does not cause a reduction of... » QuizTablet

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