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Aldehydes, Ketones and Carboxylic Acids · Question 24

NEET (UG) 2021MatchingMedium📈 Topic in 50% papers+4−1
1

Match List-I with List-II Choose the correct answer from the options given below.

  1. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  3. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  4. (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

Answer

(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Solution

(a) Benzene + CO, HCl in presence of anhydrous AlCl3/CuCl ⇒ benzaldehyde: Gattermann-Koch reaction ⇒ (ii)

(b) Methyl ketone + sodium hypohalite ⇒ RCOONa + CHX3: haloform reaction ⇒ (iii)

(c) Alcohol + carboxylic acid with conc. H2SO4 ⇒ ester: esterification ⇒ (iv)

(d) Carboxylic acid with α-H + X2/red P, then H2O ⇒ α-halocarboxylic acid: Hell-Volhard-Zelinsky reaction ⇒ (i)

∴ (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Answer: (1)

NEET (UG) 2021

Keep practising — Aldehydes, Ketones and Carboxylic Acids

2

The intermediate compound 'X' in the following chemical reaction is : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2021
3

The product formed in the following chemical reaction is : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2021
4

Identify compound X in the following sequence of reactions : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2020
5

Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as :

  1. Cannizzaro's reaction
  2. Cross Cannizzaro's reaction
  3. Cross Aldol condensation
  4. Aldol condensation
NEET (UG) 2020
6

The major product of the following reaction is : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2019
7

Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively

  1. [figure] and I2
  2. [figure] and I2
  3. [figure] and I2
  4. [figure] and I2
NEET 2018
8

Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

  1. formation of intramolecular H-bonding
  2. formation of carboxylate ion
  3. more extensive association of carboxylic acid via van der Waals' forces of attraction
  4. formation of intermolecular H-bonding
NEET 2018
9

Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET 2017
10

Consider the reactions, [figure] Identify A, X, Y and Z.

  1. A-Methoxymethane, X-Ethanol, Y-Ethanoic acid, Z-Semicarbazide.
  2. A-Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazone.
  3. A-Ethanol, X-Acetaldehyde, Y-Butanone, Z-Hydrazone.
  4. A-Methoxymethane, X-Ethanoic acid, Y-Acetate ion, Z-Hydrazine.
NEET 2017
11

Which of the following reagents would distinguish cis-cyclopentane-1,2-diol from the trans-isomer?

  1. MnO2
  2. Aluminium isopropoxide
  3. Acetone
  4. Ozone
NEET 2016 (Phase 1)

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