- Exam
- JEE Main
- Year
- 2023
- Date
- 1 February
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Surface Chemistry
JEE Main 2023 · 1 February · Morning Shift · Chemistry · Surface Chemistry
Given below are two statements: One is labelled as Assertion A and...
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Amongst and ; of activated charcoal adsorbs more of .
Reason R: The critical volume and critical pressure (atm) is highest for Krypton but the compressibility factor at critical point is lowest for Krypton.
In the light of the above statements, choose the correct answer from the options given below.
Options
- AA is true but R is false
- BA is false but R is true
- CBoth A and R are true but R is NOT the correct explanation of A
- DBoth A and R are true and R is the correct explanation A
Correct answer
A. A is true but R is false
Step-by-step solution
Kr has a maximum molecular weight, so it has more Van der Waal forces. So critical temperature is high and gas having more critical temperature is more adsorbed on activated charcoal. Hence, assertion is correct.
The critical volume and critical pressure is highest for krypton but the compressibility factor at critical point is lowest at krypton. This reason is incorrect because is same for all real gases.