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Aldehydes, Ketones and Carboxylic Acids

NEET (UG) 2024MCQEasy📈 Topic in 38% papers+4−1
Ques. 1NEET (UG) 2024

Fehling's solution 'A' is

  1. aqueous copper sulphate
  2. alkaline copper sulphate
  3. alkaline solution of sodium potassium tartrate (Rochelle's salt)
  4. aqueous sodium citrate

Answer

(1) aqueous copper sulphate

Solution

Fehling's solution A is aqueous copper sulphate (CuSO4) solution.

Fehling's solution B is alkaline sodium potassium tartrate (Rochelle's salt); the two are mixed in equal amounts just before the test.

Answer: (1)

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Ques. 2NEET (UG) 2024

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

  1. A-IV, B-I, C-III, D-II
  2. A-III, B-I, C-II, D-IV
  3. A-IV, B-I, C-II, D-III
  4. A-I, B-IV, C-II, D-III
Ques. 3RE-NEET (UG) 2024

Select the incorrect reaction among the following :

  1. CH3COCl [ ]H2O CH3COOH
  2. [figure]
  3. CH3CH2OH [(ii) H3O ](i) KMnO4/OH- CH3COOH
  4. CH3CH2CH2OH CrO3-H2SO4 CH3CH2COOH
Ques. 4NEET (UG) 2023

Identify product (A) in the following reaction : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 5NEET (UG) 2023

Complete the following reaction: [figure] [C] is .

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 6NEET (UG) 2023

Identify the major product obtained in the following reaction: [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7NEET (UG) 2022

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below

  1. Both Statement I and Statement II are correct
  2. Both Statement I and Statement II are incorrect
  3. Statement I is correct but Statement II is incorrect
  4. Statement I is incorrect but Statement II is correct
Ques. 8NEET (UG) 2022

RMgX + CO2 [ether]dry Y H3O+ RCOOH What is Y in the above reaction?

  1. RCOO-Mg+X
  2. R3CO-Mg+X
  3. RCOO-X+
  4. (RCOO)2Mg
Ques. 9NEET (UG) 2022

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

  1. (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
  2. (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)
  3. (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)
  4. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
Ques. 10NEET (UG) 2022

Which one of the following is not formed when acetone reacts with 2-pentanone in the presence of dilute NaOH followed by heating?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 11NEET (UG) 2022 (Phase 2)

Which of the following reactions is not an example for nucleophilic addition-elimination reaction?

  1. CH3CHO + NH3 CH3CH=NH + H2O
  2. CH3CHO + NaHSO3 CH3- H | OH |C-SO3Na
  3. CH3CHO + NH2OH CH3CH=N-OH + H2O
  4. CH3CHO + C6H5NHNH2 CH3CH=N-NHC6H5 + H2O

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