JEE Main 2022 · 30 Jun · Shift 1 · Chemistry Q73

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ChemistrySingle correct+4 / -1Question 73 of 90

TLC analysis of a mixture having 3 components (A, B, C) using silica gel as the stationary phase gave following $R_f$ values; for A = 0.72, B = 0.48, C = 0.20.

Regarding the above observations, which one of the following statements is not correct for column chromatography of the mixture ?

A is the most non-polar component

C is the most soluble component in mobile phase

A will be eluted first

C is the most strongly absorbed component

Answer and worked solution

Official answer: B

Lowest $R_f$ (C) means C is held most strongly by silica and is least soluble in the mobile phase, so B is the incorrect statement.

(B)

Topics:Purification and characterisation

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JEE Main 2022 · 30 Jun · Shift 1, Chemistry question 73