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Statement-1 : If adhesion is greater tha...

Statement-1 : If adhesion is greater than cohesion, then the meniscus is concave.
And
Statement-2 : If adhesion is greater than cohesion, then the liquid will not wet the solid.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is not a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we need to understand the concepts of adhesion and cohesion. ### Step 1: Define Adhesion and Cohesion - **Cohesion** refers to the attractive force between like molecules (e.g., water molecules attracting each other). - **Adhesion** refers to the attractive force between unlike molecules (e.g., water molecules attracting to the molecules of a glass container). ### Step 2: Analyze Statement 1 - **Statement 1**: "If adhesion is greater than cohesion, then the meniscus is concave." - When adhesion is greater than cohesion, the liquid molecules are more strongly attracted to the container than to each other. This causes the liquid to climb up the walls of the container, resulting in a concave meniscus. - **Conclusion**: Statement 1 is **True**. ### Step 3: Analyze Statement 2 - **Statement 2**: "If adhesion is greater than cohesion, then the liquid will not wet the solid." - When adhesion is greater than cohesion, the liquid will indeed wet the solid surface because the liquid molecules are more attracted to the solid than to each other. This leads to the liquid spreading out on the surface. - **Conclusion**: Statement 2 is **False**. ### Final Conclusion - **Statement 1** is true, and **Statement 2** is false. Therefore, the correct answer is that Statement 1 is true and Statement 2 is false.
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