You are given two samples of water labelled as ‘A’ and ‘B’. Sample ‘A’ boils at $100 ℃$ and sample ‘B’ boils at $102 ℃$ . Which of the following sample of water will not freeze at $0 ℃$ ?

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

Sample A

Sample B

Both sample A and B

Freezing point does not get affected

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Sample A:
The boiling point of water is $100 ℃$ at 1 atm pressure, and the freezing point is $0 ℃$ at 1 atm pressure and we know that only pure substances have such melting and boiling point.
Sample B:
When water has some impurities then its boiling point rises and melting point falls. Now sample B here is not pure water since its boiling point is more than $100 ℃$ and hence its melting point will be lower than $0 ℃$ . This is the reason why sample B will not freeze at $0 ℃$ .