1
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.
2
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
3
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
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following options.

Assertion: The Eclipsed and the Staggered conformations of Ethane continuously flip from one form to the other.

Reason: The torsional barrier between the Conformers of Ethane has a high value of about $$50 \mathrm{~kJ} / \mathrm{mol}$$ and this restricts free rotation around $$\mathrm{C}-\mathrm{C}$$ bond.

A
Assertion is incorrect but Reason is correct statement.
B
Both Assertion and Reason are incorrect statements.
C
Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
D
Assertion is correct but Reason is incorrect statement.
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