1
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Given are 4 pairs of covalent molecules. Identify the pair in which both molecules have the same shape.
A
$\mathrm{XeF}_2 ~\&~ \mathrm{HgCl}_2$
B
$\mathrm{BF}_3~ \& ~\mathrm{NH}_3$
C
$\mathrm{XeF} 4 ~\& ~\mathrm{SF}_4$
D
$\mathrm{BrF}_5 ~\& ~\mathrm{PCl}_5$
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

From among the 4 given compounds identify the compounds which possess a net dipole moment.

A. cis-1,2-Dichloroethene

B. Tetrachloromethane

C. o-Dichlorobenzene

D. trans 2,3-Dibromobut-2-ene

A
A and D
B
D and B
C
A and C
D
B and C
3
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Which one of the following molecules attains greater stability on formation of its diatomic monovalent anion?
A
$\mathrm{C}_2$
B
$\mathrm{O}_2$
C
$\mathrm{N}_2$
D
$\mathrm{F_2}$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
In which one of the following pairs does the stability of the monovalent ion increase with respect to the molecule, while the magnetic character remains the same for both?
A
$\mathrm{C}_2 / \mathrm{C}_2^{+}$
B
$\mathrm{O}_2 / \mathrm{O}_2{ }^{+}$
C
$\mathrm{B}_2 / \mathrm{B}_2{ }^{+}$
D
$\mathrm{N}_2 / \mathrm{N}_2^{+}$
COMEDK Subjects
EXAM MAP