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Given below are two statement : 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 from the options given below :

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

Correct answer: Both statement-I and statement-II are true

Solution

Statement-I is correct because the retardation factor (R_f) is a ratio that can be expressed in terms of distance, such as meters or centimeters. Statement-II is also true as the R_f value for a specific compound is consistent in a given solvent under the same conditions, although it may vary in different solvents.

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