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Question: Answered & Verified by Expert
Assertion : Soap is mixed to form O/W emulsion.
Reason : Soap reduces surface tension.
ChemistrySurface ChemistryAIIMSAIIMS 2018 (27 May)
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion.
  • B If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C If assertion is true but reason is false.
  • D If both assertion and reason are false.
Solution:
1160 Upvotes Verified Answer
The correct answer is: If both assertion and reason are true and reason is the correct explanation of assertion.
For emulsification, soap is added in $\mathrm{O} / \mathrm{W}$ emulsion as it reduces surface tension and forms better colloid.

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