1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
A current of 2.5 amperes is passed through 800 ml of 0.48 M solution of $\mathrm{CuSO}_4$ for 1.0 hour with a current efficiency of $80 \%$. If the volume of the solution remains unchanged, what is the final molarity of the solution?
A
0.386
B
0.315
C
0.433
D
0.298
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
A certain orbital having 2 angular nodes and no radial nodes is:
A
3d
B
3s
C
3p
D
2p
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
An organic compound $[\mathrm{X}]$ reacts with $\mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4$ to give compound $[\mathrm{Y}]$ which reduces Tollen's reagent and undergoes Cannizzaro's reaction. On rigorous oxidation of $[\mathrm{Y}]$ in presence of $\mathrm{KMnO}_4 / \mathrm{H}^{+}$Phthalic acid is the product obtained. What is $[\mathrm{X}]$ ?
A
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 2 English Option 1
B
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 2 English Option 2
C
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 2 English Option 3
D
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 2 English Option 4
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Arrange the following free radicals in the increasing order of their stability:

A B C D
COMEDK 2025 Morning Shift Chemistry - General Organic Chemistry Question 1 English 1 COMEDK 2025 Morning Shift Chemistry - General Organic Chemistry Question 1 English 2 COMEDK 2025 Morning Shift Chemistry - General Organic Chemistry Question 1 English 3 COMEDK 2025 Morning Shift Chemistry - General Organic Chemistry Question 1 English 4

A
$\mathrm{A}<\mathrm{B}<\mathrm{D}<\mathrm{C}$
B
$\mathrm{C}<\mathrm{D}<\mathrm{B}<\mathrm{A}$
C
$\mathrm{C}<\mathrm{B}<\mathrm{D}<\mathrm{A}$
D
$\mathrm{A}<\mathrm{B}<\mathrm{C}<\mathrm{D}$
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