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UPSC 2002: Which one of the following statements is correct?
(a)The boiling point of an aqueous solution is higher than that of pure water
(b)Addition of solutes to a solution causes an increase in its water potential
(c)The vapour pressure of the water in a solution is lower than that of pure water
(d)When a solution is separated from water by a semi permeable membrane, water movement can be prevented by applying pressure to the solution
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Not attemptedCorrect Answer: (b) Addition of solutes to a solution causes an increase in its water potential
The correct answer is (b). Note: The PDF source gives answer (b), though colligative properties suggest (a) and (c) are also correct statements. Options (a), (c), and (d) are all scientifically valid properties of solutions (elevation of boiling point, depression of vapour pressure, and osmosis respectively). The answer as per the official key is (b).
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Frequently Asked Questions
What is the correct answer to this UPSC 2002 Science & Technology question?▼
The correct answer is option (b): Addition of solutes to a solution causes an increase in its water potential. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Chemistry question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2002, GS Paper 1, as Question 28. It falls under Science & Technology > Chemistry.
What is the difficulty level of this UPSC question?▼
This question is rated "medium". It is a challenging question that demands deep subject knowledge and analytical thinking.
How many UPSC Prelims questions have been asked from Chemistry?▼
UPSC has asked 53 questions from Chemistry (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.