Question

Match List-I with List-II.

List-I		List-II
(A)	N2(g) + 3H2(g) \(\rightarrow\) 2NH3(g)	(I)	Cu
(B)	CO(g) + 3H2(g) \(\rightarrow\) CH4(g) + H2O(g)	(II)	Cu/ZnO – Cr2O3
(C)	CO(g) + H2(g) \(\rightarrow\)HCHO(g)	(III)	FexOy + K2O + Al2O3
(D)	CO(g) + 2H2(g) \(\rightarrow\) CH3OH(g)	(IV)	Ni

Choose the correct answer from the options given below :

• (A) – (II), (B) – (IV), (C) – (I), (D) – (III)
• (A) – (II), (B) – (I), (C) – (IV), (D) – (III)
• (A) – (III), (B) – (IV), (C) – (I), (D) – (II)
• (A) – (III), (B) – (I), (C) – (IV), (D) – (II)

Answer 1

The Correct Option is C

 Let's solve the given match-the-following question by understanding the processes and corresponding catalysts:

1. Reaction A: \( N_2(g) + 3H_2(g) \rightarrow 2NH_3(g) \)
   • This is the synthesis of ammonia, commonly known as the Haber process. The catalyst typically used is iron with promoters such as K₂O and Al₂O₃.
   • Thus, Reaction A matches with III: Fe_xO_y + K₂O + Al₂O₃.
2. Reaction B: \( CO(g) + 3H_2(g) \rightarrow CH_4(g) + H_2O(g) \)
   • This reaction produces methane and water from carbon monoxide and hydrogen, generally catalyzed by nickel.
   • Thus, Reaction B matches with IV: Ni.
3. Reaction C: \( CO(g) + H_2(g) \rightarrow HCHO(g) \)
   • This reaction is the formation of formaldehyde from carbon monoxide and hydrogen, where copper is typically the catalyst.
   • Thus, Reaction C matches with I: Cu.
4. Reaction D: \( CO(g) + 2H_2(g) \rightarrow CH_3OH(g) \)
   • This is the synthesis of methanol, for which the catalyst used is typically a combination of copper, zinc oxide, and chromium oxide.
   • Thus, Reaction D matches with II: Cu/ZnO – Cr₂O₃.

Based on the above matching, the correct answer is:

(A) – (III), (B) – (IV), (C) – (I), (D) – (II)