Question

Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Clemmensen reduction	(i)	$Conc.KOH$
(B)	Rosenmund reduction	(ii)	$Zn/Hg+conc.HCl$
(C)	Iodoform reaction	(iii)	$H_2/Pd-BaS{O}_4$
(D)	Cannizzaro	(iv)	$NaOH+I_2$

• A. (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)
• B. (A) - (iii), (B) - (iv), (C) - (i), (D) - (ii)
• C. (A) - (ii), (B) - (iii), (C) - (iv), (D) - (i)
• D. (A) - (iv), (B) - (i), (C) - (ii), (D) - (iii)

Answer 1

The correct option is C (A) - (ii), (B) - (iii), (C) - (iv), (D) - (i)

• Clemmensen reduction:$Zn|Hg+conc.HCl$
  

Clemmensen reduction reduces Aldehydes and ketones to corresponding hydrocarbons.

• Rosenmund reduction:$H_2/Pd-BaS{O}_4$
  

The Rosenmund reduction is used to prepare aldehyde from acyl halide.

• Iodoform reaction:$I_2+NaOH$
  

Idoform reaction used for the identification of methyl ketone.

• Cannizzaro:$Conc.KOH$
  

Cannizzaro's reaction is a disproportionation reaction. It is shown by the aldehydes or ketones which do not have $\alpha$-hydrogen atoms.