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Model Paper 10 — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryModel Paper 101 Mark
MCQ
Assertion (A): Simple distillation can help in separating a mixture of propan-1-ol (boiling point $97^{\circ} C$ ) and propanone (boiling point $56^{\circ} C$ ).
Reason (R): Liquids with a difference of more than $20^{\circ} C$ in their boiling points can be separated by simple distillation.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
✓

Answer

Correct option: A.
Both A and R are true and R is the correct explanation of A.
(a) Both A and R are true and R is the correct explanation of A .
Explanation: The liquids are having sufficient difference in their boiling points. Liquids having different boiling points vaporize at different temperatures. The vapours are cooled and the liquids so formed are collected separately.

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