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Aldehydes, Ketones and Carboxylic Acids

JEE Main 2025 (Online) 23rd January Evening ShiftMCQMedium📈 Topic in 13% papers+4−1
Ques. 1JEE Main 2025, 23 January (Evening Shift)

Given below are two statements: Consider the following reaction [figure] In the light of the above statements, choose the correct answer from the options given below :

  1. Statement I is true but Statement II is false
  2. Both Statement I and Statement II are true
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are false

Answer

(2) Both Statement I and Statement II are true

Solution

Hydration constant is large when the C=O carbon is unhindered and strongly electrophilic:

[figure]

[figure]

I: H, H – least hindered ⇒ K 2280 (true); II: three Cl (-I) ⇒ K 2000 (true)

∴ both true

Answer: (2)

Keep practising — Aldehydes, Ketones and Carboxylic Acids

Ques. 2JEE Main 2025, 22 January (Morning Shift)

The compounds which give positive Fehling's test are : Choose the correct answer from the options given below :

  1. A, C and D Only
  2. A, B and C Only
  3. A, D and E Only
  4. C, D and E Only
Ques. 3JEE Main 2025, 22 January (Evening Shift)

[figure] Residue (A) + HCl (dil) Compound (B) Structure of residue (A) and compound (B) formed respectively is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

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