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Question
Assertion :More is the cohesive force, more is the surface tension. Reason: More cohesive force leads to more shrinking of liquid surface.
Assertion :More is the cohesive force, more is the surface tension. Reason: More cohesive force leads to more shrinking of liquid surface.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension. The molecules at the surface do not have other like molecules on all sides of them and consequently they cohere more strongly to those directly associated with them on the surface. Hence more the cohesive force, there will be more shrinking of liquid surface creating more surface tension. Hence both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension. The molecules at the surface do not have other like molecules on all sides of them and consequently they cohere more strongly to those directly associated with them on the surface. Hence more the cohesive force, there will be more shrinking of liquid surface creating more surface tension. Hence both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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