Q.63. Given below are two statements :
Statement (I) : 1,2,3-Trihydroxypropane can be separated from

Q: What is the correct answer for this exam Chemistry Q63?

The correct answer is D. Sol. Statement (I): 1,2,3-Trihydroxypropane is glycerol. Glycerol has a high boiling point (290 °C) and is miscible with water. However, it decomposes below its boiling point at atmospheric pressure. Therefore, it cannot be separated from water by simple distillation; it is typically separated by vacuum distillation (distillation under reduced pressure) to lower its boiling point and prevent decom

Q: Q.63. 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…

The correct answer is D. Sol. Statement (I): 1,2,3-Trihydroxypropane is glycerol. Glycerol has a high boiling point (290 °C) and is miscible with water. However, it decomposes below its boiling point at atmospheric pressure. Therefore, it cannot be separated from water by simple distillation; it is typically separated by vacuum distillation (distillation under reduced pressure) to lower its boiling point and prevent decom

Q: What are the options for this this exam Chemistry question?

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

Question

Q.63. 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 :

FirstInTest · Accepted Answer

Sol. Statement (I): 1,2,3-Trihydroxypropane is glycerol. Glycerol has a high boiling point (290 °C) and is miscible with water. However, it decomposes below its boiling point at atmospheric pressure. Therefore, it cannot be separated from water by simple distillation; it is typically separated by vacuum distillation (distillation under reduced pressure) to lower its boiling point and prevent decomposition. So, Statement I is false.

Statement (II): An azeotropic mixture (or azeotrope) is a mixture of two or more liquids that boils at a constant temperature and whose vapor has the same composition as the liquid phase. Because the compositions of the liquid and vapor phases are the same at the boiling point, azeotropes cannot be separated into their pure components by fractional distillation. So, Statement II is true.

Therefore, Statement I is false but Statement II is true.

Answer

Both Statement I and Statement II are true

Answer

Both Statement I and Statement II are false

Answer

Statement I is true but Statement II is false

Answer

Statement I is false but Statement II is true

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