NEET2025Chemistry-Solutions
NEET 2025 Chemistry Raoult's Law MCQ Question
Type: MCQ-conceptual-Medium-Class 12
5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution?
A
The solution shows positive deviation.
B
The solution shows negative deviation.
C
The solution is ideal.
D
The solution has volume greater than the sum of individual volumes.
Correct Answer
Option B
Detailed Explanation
The observed vapour pressure is higher than expected for an ideal solution, indicating positive deviation from Raoult's Law.
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