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Question

Addition of a surfactant in water:
  1. decreases surface tension and angle of contact
  2. decreases viscosity
  3. increases vapour pressure
  4. decreases surface tension and increases angle of contact

A
increases vapour pressure
B
decreases surface tension and angle of contact
C
decreases viscosity
D
decreases surface tension and increases angle of contact
Solution
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Addition of surfactant shows decrease in surface tension, angle of contact, vapour pressure and increases viscosity.

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