Physical Chemistry
Some Basic Concepts of Chemistry
MCQ (Single Correct Answer)
Chemical Equilibrium
MCQ (Single Correct Answer)
Inorganic Chemistry
Periodic Table and Periodicity
MCQ (Single Correct Answer)
Chemical Bonding and Molecular Structure
MCQ (Single Correct Answer)
Hydrogen and It's Compounds
MCQ (Single Correct Answer)
d and f Block Elements
MCQ (Single Correct Answer)
Coordination Compounds
MCQ (Single Correct Answer)
Environmental Chemistry
MCQ (Single Correct Answer)
Organic Chemistry
IUPAC Nomenclatures
MCQ (Single Correct Answer)
General Organic Chemistry
MCQ (Single Correct Answer)
Haloalkanes and Haloarenes
MCQ (Single Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehyde and Ketone
MCQ (Single Correct Answer)
Carboxylic Acids and Its Derivatives
MCQ (Single Correct Answer)
Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
Practical Organic Chemistry
MCQ (Single Correct Answer)
1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the end-product [D] formed when solution salicylate undergoes the following series of reactions

COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 2 English

A
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 2 English Option 1
B
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 2 English Option 2
C
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 2 English Option 3
D
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 2 English Option 4
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Given are the names of 4 compounds. Two of these compounds will not undergo Cannizzaro's reaction. Identify the two.

A. 2-Chlorobutanal

B. 2,2-Dimethylpropanal

C. Benzaldehyde

D. 2-Phenyl ethanol

A
A & D
B
D & C
C
C & B
D
A & B
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is/are the product/s formed when Benzaldehyde and Ethanal react in presence of dil. $$\mathrm{NaOH}$$ followed by heating the intermediate product formed?

A
2-Methylpent-2-enal & But-2-enal
B
3-Phenylprop-2-enal & But-2-enal
C
Only product is But-2-enal
D
Only product is 2-Phenylprop-2-enal
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following is the correct order of reagents to be used to convent [A] to [X] ?

COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 1 English

$$ \text { Reagents: } \mathrm{PCC}, \mathrm{PCl}_5, \mathrm{LiAlH}_4, \frac{\mathrm{KCN}}{\mathrm{H}_3 \mathrm{O}^{+}} $$

A
$$ \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC} \quad \mathrm{LiAlH}_4 $$
B
$$ \mathrm{PCl}_5, \quad \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4 \quad \mathrm{PCC} $$
C
$$ \mathrm{LiAlH}_4, \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC} $$
D
$$ \mathrm{PCC} \quad \mathrm{PCl}_5 \quad \frac{K C N}{\mathrm{H}_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4 $$
COMEDK Subjects