Question

Match List I with List II

List I		List II
A	Physisorption	i	Single Layer Adsorption
B	Chemisorption	ii	$20-40 kJ mol ^{-1}$
C	$N_2(g) + 3H_2(g) \xrightarrow{Fe(s)} 2NH_3(g)$	iii	Chromatography
D	Analytical Application or Adsorption	iv	Heterogeneous catalysis

Choose the correct answer from the options given below:

• A. A - III, B - IV, C - I, D - II
• B. A - II, B - III, C - I, D - IV
• C. A - II, B - I, C - IV, D - III
• D. A - IV, B - II, C - III, D - I

Answer 1

Answer: (C)

(A) Physisorption =$ 20 - 40$ kJ/mol and Chemisorption = $80 - 240$ kJ/mol
(B) Physisorption is multi-layered and chemisorption is unimolecular layered.
(C) In heterogeneous catalysis, medium and catalyst are in different phases.
(D) Chromatography uses adsorption to purify/separate mixtures