JEE PYQ: Qualitative Analysis Question 3
Question 3 - 2021 (17 Mar Shift 1)
Given below are two statements:
Statement-I: Retardation factor ($R_f$) can be measured in meter/centimeter.
Statement-II: $R_f$ value of a compound remains constant in all solvents.
Choose the most appropriate answer:
(1). (Statement-I is true but statement-II is false)
(2). (Both statement-I and statement-II are true)
(3). (Both statement-I and statement-II are false)
(4). (Statement-I is false but statement-II is true)
Show Answer
Answer: (3)
Solution
$R_f$ is a dimensionless ratio (distance travelled by substance / distance travelled by solvent), so it has no units. Statement-I is false. $R_f$ varies with solvent, so Statement-II is also false.
BETA
