Question

Given below are two statements: Statement (I): 1,2,3–Trihydroxypropane can be separated from water by simple distillation. Statement (II): An azeotropic mixture cannot be separated by fractional distillation. In the light of the above statements, choose the correct answer from the options given below:

• A. Both Statement I and Statement II are true
• B. Both Statement I and Statement II are false
• C. Statement I is true but Statement II is false
• D. Statement I is false but Statement II is true

Answer 1

The Correct Option is D

Concept: Separation by distillation depends on the difference in boiling points.
Step 1:Check Statement I} 1,2,3–Trihydroxypropane (glycerol) has a very high boiling point and forms strong hydrogen bonding with water. Therefore it cannot be separated from water by simple distillation. Hence Statement I is false.
Step 2:Check Statement II} Azeotropic mixtures have constant boiling composition. Thus they cannot be separated by fractional distillation. Hence Statement II is true. \[ \boxed{\text{Statement I is false but Statement II is true}} \]