1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

From the given covalent compounds (A to F) identify the pair of molecules which have:

(i) Two lone pairs of electrons on the central atom.

(ii) One lone pair of electrons on the central atom.

A. $\mathrm{SO}_2$
B. $\mathrm{ClF}_3$
C. $\mathrm{BF}_3$
D. $\mathrm{BrF}_5$
E. XeF 4
F. $\mathrm{SF}_6$

A
(i) $A \& F\qquad$ (ii) $A \& E$
B
(i) $D \& F\qquad$ (ii) $\mathrm{C} \& \mathrm{D}$
C
(i) $B$ & $E\qquad$ (ii) $\mathrm{A} \& \mathrm{D}$
D
(i) $\mathrm{C} \& \mathrm{~A}\qquad$ (ii) $\mathrm{B} \& \mathrm{C}$
2
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
3
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
4
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
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