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JEE Main 20206 SeptemberEvening Shift
Exam
JEE Main
Year
2020
Date
6 September
Shift
Evening Shift
Subject
Chemistry
Chapter
Aldehydes and Ketones

JEE Main 2020 · 6 September · Evening Shift · Chemistry · Aldehydes and Ketones

The correct match between Item-I (starting material) and Item-II...

The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :

Item-I Item-II
(I) Benzene (P) HClHCl and SnCl2,H3O+{SnCl}_{2}, {H}_{3}O +
(II) Benzonitrile (Q) H2,Pd−BaSO4,S{H}_{2}, Pd - {BaSO}_{4}, S and quinoline
(III) Benzoyl Chloride (R) Co,HClandAlCl3Co, HCland{AlCl}_{3}

The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :

Options

  1. A(I)-(Q), (II)-(R) and (III)-(P)
  2. B(I)-(P), (II)-(Q) and (III)-(R)
  3. C(I)-(R), (II)-(P) and (III)-(Q)
  4. D(I)-(R), (II)-(Q) and (III)-(P)

Correct answer

C. (I)-(R), (II)-(P) and (III)-(Q)

Step-by-step solution

The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Gatterman-Koach reaction
The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Reduction Stephan Reduction
The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Rosenmund Reduction

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