Question

From the figure of column chromatography given below, identify incorrect statements

A. Compound 'c' is more polar than 'a' and 'b' 
B. Compound 'a' is least polar
C. Compound 'b' comes out of the column before 'c' and after 'a' 
D. Compound 'a' spends more time in the column 
Choose the correct answer from the options given below

• A. B, C and D only
• B. A, B and C only
• C. B and D only
• D. A, B and D only

Answer 1

The Correct Option is B

Column Adsorption and Elution Analysis 

Key Factors:

• Adsorption of compound α is proportional to:
• The order of polarity determines the retention time.
• The time spent in the column is inversely proportional to the order in which the compounds come out of the column:

Conclusion:

• Order of polarity:

a > b > c

• Order of elution (come out from the column):

c > b > a

• Time spent in the column:

a > b > c

The incorrect statements are A, B, and C Only.

Answer 2

From the given chromatography column, compound ’c’ is the most polar, as it spends the most time in the column. Compound ’a’ is the least polar as it elutes last. Compound ’b’ elutes between ’a’ and ’c’.