JEE Main Chemistry question
Statement 1: The water pouch in an instant cold pack for treating athletic injuries breaks when squeezed and dissolves, lowering the temperature. Statement 2: Addition of a non-volatile solute results in depression of the freezing point of the solvent.
Answer: (B)
Solution
Both statements are independently true: instant cold packs do cool down as dissolves, and dissolving a non-volatile solute does depress the freezing point of a solvent. However, the cooling felt in the cold pack is
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