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EEJ MAIN Chemistry QUESTION #7507
Question 1

Match Item I (compound) with the correct Item II (reagent/property):

Item IItem II
(A) Acetaldehyde(P) Tollen's reagent
(B) Benzaldehyde(Q) Lucas reagent
(C) Cyclohexanol(R) NaHSO$_3$
(D) Phenol(S) FeCl$_3$
  • (A)→(P),(B)→(R),(C)→(Q),(D)→(S)✔️
  • (A)→(R),(B)→(P),(C)→(Q),(D)→(S)
  • (A)→(P),(B)→(Q),(C)→(R),(D)→(S)
  • (A)→(S),(B)→(P),(C)→(Q),(D)→(R)
Correct Answer Explanation

Matching logic:

  • Acetaldehyde (CH$_3$CHO): Aliphatic aldehyde — gives silver mirror with Tollen's reagent (P).
  • Benzaldehyde (PhCHO): Aromatic aldehyde — forms addition compound with NaHSO$_3$ (R) (bisulphite addition).
  • Cyclohexanol: Secondary alcohol — reacts with Lucas reagent (Q) (ZnCl$_2$/HCl) to form turbid chloride (within minutes).
  • Phenol: Gives characteristic violet colour with FeCl$_3$ (S).

Correct: (A)→(P), (B)→(R), (C)→(Q), (D)→(S)