A: Enthalpy of physical adsorption is lower than chemical adsorption
R: Molecule of adsorbate and adsorbent are held together by vanderwaal forces in physical adsorption and by chemical bonds in chemical adsorption

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true and (R) is not the correct explanation of (A)

Both (A) and (R) are false

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

- Chemisorption enthalpy is about $200 {kJmol}^{- 1}$

- Physical adsorption enthalpy is about $20 {kJmol}^{- 1}$

- Because molecules of adsorbate and adsorbent are bound together by chemical bonds in chemisorption as opposed to van der Waals forces in physical adsorption

Hence the correct option is A.

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!