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Each question contains STATEMENT-1 (Asse...

Each question contains STATEMENT-1 (Assertion) and STATEMENT-2( Reason).
Examine the statements carefully and mark the correct answer according to the instruction given below:
STATEMENT-1: The melting point of ice decreases with increase of pressure.
STATEMENT-2: Ice contracts on melting .

A

If both the statements are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-1

B

If both the statement are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-1

C

If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE

D

If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the two statements about the melting point of ice and the behavior of ice during melting, we can break down the reasoning step by step. ### Step-by-Step Solution: 1. **Understanding Statement 1**: - **Assertion**: "The melting point of ice decreases with increase of pressure." - In general, for most solids, increasing pressure raises the melting point because it favors the solid phase (which has a lower volume) over the liquid phase (which has a higher volume). However, ice is an exception due to its unique properties. 2. **Understanding Statement 2**: - **Reason**: "Ice contracts on melting." - When ice (solid) melts, it turns into water (liquid). Ice has a lower density than liquid water, meaning that when it melts, it actually occupies less volume. Therefore, ice does contract when it melts. 3. **Analyzing the Effect of Pressure on Ice**: - When pressure is applied to ice, it favors the phase with the smaller volume. Since ice occupies more volume than water, increasing pressure will favor the liquid phase (water) over the solid phase (ice). - This means that under increased pressure, the melting point of ice will decrease because less energy (heat) is required to convert ice into water. 4. **Conclusion**: - Both statements are correct: - Statement 1 is true: The melting point of ice decreases with an increase in pressure. - Statement 2 is true: Ice does contract upon melting. - Additionally, Statement 2 provides the correct explanation for Statement 1 because the contraction of ice upon melting under pressure leads to a decrease in the melting point. ### Final Answer: Both statements are correct, and Statement 2 is the correct explanation for Statement 1. Therefore, the correct option is A. ---
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