The final product A formed in the following multistep reaction sequence is [2024]





(4)

Identify the reagents used for the following conversion [2024]

(3)
DIBAL-H is used for selective reduction of esters and nitriles to aldehydes at low temperature (around 78°C).

Match List – I with List – II. [2024]

Choose the correct answer from the options given below:
(A)−(III), (B)−(IV), (C)−(I), (D)−(II)
(A)−(IV), (B)−(II), (C)−(I), (D)−(III)
(A)−(IV), (B)−(II), (C)−(III), (D)−(I)
(A)−(III), (B)−(IV), (C)−(II), (D)−(I)
(2)

Identify the product in the following reaction: [2024]





(1)
This is Clemmensen reduction reaction.
Identify ‘A’ in the following reaction: [2024]





(3)
This is Wolff-Kishner reduction reaction.
Identify A and B in the given chemical reaction sequence: [2024]





(3)

Consider the given reaction, identify the major product P. [2024]




(2)

Note: Actual product is anion of (P) as hydrolysis is done in basic medium.

What is the structure of C? [2024]




(2)

Which of the following compounds can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite? [2024]



(1)

The product (P) formed in the following reaction is: [2025]





(4)
This is Clemmenson’s reduction, it reduces aldehydes/ketones to corresponding alkanes.
Number of molecules from below which cannot give iodoform reaction is:
Ethanol, Isopropyl alcohol, Bromoacetone, 2-Butanol, 2-Butanone, Butanal, 2-Pentanone, 3-Pentanone, Pentanal and 3-Pentanol [2025]
5
4
3
2
(2)
Butanal, 3-pentanone, pentanal and 3-pentanol do not give iodoform test.
The major product (P) in the following reaction is: [2025]





(2)
This is intramolecular Cannizzaro reaction. Aldehydic part gets oxidized and ketonic part gets reduced.
Which among the following compounds give yellow solid when reacted with NaOI/NaOH?

Choose the correct answer from the options given below: [2025]
(B), (C) and (E) Only
(A) and (C) Only
(C) and (D) Only
(A), (C) and (D) Only
(2)
Iodoform test is given by methyl aldehydes (–CO–H) / methyl ketones (–CO–R) or Secondary alcohols (–CH(OH)–H / –CH(OH)–R) which are oxidized to such compounds in reaction conditions of iodoform test.

A compound “X” absorbs 2 moles of hydrogen and ‘X’ upon oxidation with gives

The total number of bonds present in the compound ‘X’ is _______. [2025]
(27)
X is either of the following two. It has 27 sigma bonds.

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

In the light of the above statements, choose the correct answer from the options given below: [2023]
A is false but R is true.
Both A and R are true and R is the correct explanation of A.
A is true but R is false.
Both A and R are true but R is not the correct explanation of A.
(1)
Zn–Hg/HCl (Clemmensen reduction reduces the carbonyl group to – but also affect acid sensitive functional groups as alkene, alcohol, ether and ester.
Given below are two statements:

In the light of the above statements, choose the correct answer from the options given below: [2023]
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false
(1)


‘A’ and ‘B’ in the above reactions are: [2023]




(3)
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

In the light of the above statements, choose the correct answer from the options given below: [2023]
Both A and R are true and R is the correct explanation of A
A is false but R is true
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
(2)
Wolff–Kishner reduction is not suitable for base sensitive group.

The major product formed in the following reaction is

Choose the correct answer from the options given below: [2023]
D only
C only
B only
A only
(3)
