JEE Main 2026 · 6 Apr · Shift 1 · Chemistry Q63

← JEE Main 2026 · 6 Apr · Shift 1

ChemistrySingle correct+4 / -1Question 63 of 75

$R_f$ value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42. 2-methylpropene is treated with dilute $\ce{H2SO4}$ to give major organic product (X). $R_f$ value for (X) in the same solvent system under identical condition will be:

0.42

0.82

0.62

0.12

Answer and worked solution

Official answer: D

X. Acid-catalysed hydration of 2-methylpropene gives tert-butyl alcohol.

Rf. The alcohol is far more polar than the alkene. It is held more strongly by the polar stationary phase and moves less. So its $R_f$ is lower: 0.12.

(D)

Topics:Purification and characterisation Alkenes

← Previous question Next question →

JEE Main 2026 · 6 Apr · Shift 1, Chemistry question 63