1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of structural isomers possible for a compound with molecular formula $\mathrm{C}_3 \mathrm{H}_9 \mathrm{~N}$ is:

A

3

B

4

C

2

D

5

2
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
Choose the incorrect statement from the following.
A
The energy difference between the staggered and eclipsed conformation of ethane is $12.55 \mathrm{~kJ} / \mathrm{mol}$
B
Staggered conformation of ethane is more stable than the eclipsed conformation.
C
The distance between non-bonded H -atoms of ethane in eclipsed conformation is $2.29$$$\mathop A\limits^o $$
D
A $90^{\circ}$ rotation converts staggered conformation of ethane into eclipsed conformation.
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following compounds will show geometrical isomerism?

A
1, 2-dibromopropene
B
2-methylbut-2-ene
C
2-methylpropene
D
1, 1-diphenylethylene
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following compounds shows Geometrical isomerism?

A
2-Methylhex-2-ene
B
4-Methylhex-2-ene
C
2-Methylhex-1-ene
D
4-Methylhex-1-ene

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