From the figure of column chromatography give | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In column chromatography,the stationary phase is typically polar (e.g.,silica gel).The compound that is least polar moves faster and elutes first,

Vedclass · Accepted Answer

$A, B$ and $C$ only

Vedclass · Answer

(A) In column chromatography,the stationary phase is typically polar (e.g.,silica gel).The compound that is least polar moves faster and elutes first,while the most polar compound moves slower and elutes last.Based on the figure,compound '$a$' is at the top,'$b$' is in the middle,and '$c$' is at the bottom (closest to the exit).Therefore,the order of elution is '$c$' (first),then '$b$',then '$a$' (last).This implies that '$c$' is the least polar and '$a$' is the most polar.Let's evaluate the statements:$A.$ '$c$' is more polar than '$a$' and '$b$': Incorrect,'$c$' is the least polar.$B.$ '$a$' is least polar: Incorrect,'$a$' is the most polar.$C.$ '$b$' comes out of the column before '$c$' and after '$a$': Incorrect,'$c$' comes out first,then '$b$',then '$a$.'$D.$ '$a$' spends more time in the column: Correct,as it is the most polar and interacts most strongly with the stationary phase.The incorrect statements are $A, B,$ and $C$.

List-$I$	List-$II$
$A$. Coloured impurity	$(p)$. Steam distillation
$B$. Mixture of $o-$nitrophenol and $p-$nitrophenol	$(q)$. Fractional distillation
$C$. Crude naphtha	$(r)$. Charcoal treatment
$D$. Mixture of glycerol and sugars	$(s)$. Distillation under reduced pressure

Similar Questions

Which among the following purification methods is based on the principle of "Solubility" in two different solvents?

Chromatography is a valuable method for the separation,isolation,purification,and identification of the constituents of a mixture. It is based on the general principle of:

$A$ liquid contains a non-volatile impurity. Which technique will be applied for its purification?

What is the characteristic of $R_f$ value?

Vedclass Test Series

Exam Paper Generator

Online Exam Module