Organic Chemistry Basics Result Question 7
(2019 Main, 11 Jan I)
(a) (A) $\rightarrow(\mathrm{Q}) ;(\mathrm{B}) \rightarrow(\mathrm{R})$; (C) $\rightarrow$ (S)
(b) (A) $\rightarrow$ (Q); (B) $\rightarrow$ (R); (C) $\rightarrow$ (P)
(c) (A) $\rightarrow$ (S); (B) $\rightarrow$ (R); (C) $\rightarrow$ (P)
(d) $(\mathrm{A}) \rightarrow(\mathrm{R}) ;(\mathrm{B}) \rightarrow(\mathrm{P}) ;(\mathrm{C}) \rightarrow(\mathrm{S})$
Show Answer
Answer:
Correct Answer: 7. ( a )
Solution:
- The correct option is :
$(\mathrm{A}) \rightarrow(\mathrm{Q}) ;(\mathrm{B}) \rightarrow(\mathrm{R}) ;(\mathrm{C}) \rightarrow(\mathrm{S})$
(A) $\mathrm{H} _2 \mathrm{O}$ and sugar mixture They do not react chemically. On heating, solubility of sugar in $\mathrm{H} _2 \mathrm{O}$ increases and on rapid cooling of saturated solution, sugar recrystallises $(Q)$.
(B) $\mathrm{H} _2 \mathrm{O}$ and aniline mixture Aniline is steam volatile but insoluble in $\mathrm{H} _2 \mathrm{O}$. So, steam distillation $(R)$ is employed for their separation.
(C) $\mathrm{H} _2 \mathrm{O}$ and toluene mixture Toluene is steam non-volatile and also insoluble in $\mathrm{H} _2 \mathrm{O}$. So, differential extraction method (S) can be used to separate them.
BETA
