Question

But-2-yne is reacted separately with one mole of Hydrogen as shown below:

A. A is more soluble than B
B. B The boiling point & melting point of $A$ are higher and lower than $B$ respectively
C. A is more polar than $B$ because dipole moment of $A$ is zero
D. $Br _2$ adds easily to $B$ than $A$
Identify the incorrect statements from the options given below:

• A. A, C & D only
• B. A and B only
• C. B, C & D only
• D. B and C only

Answer 1

Answer: (C)

B, C & D only

Answer 2

The correct answer is option (C): B, C & D only

Melting point of trans alkene is greater than cis alkene
Boiling point of cis alkene is greater than trans alkene
Br2 adds easily to cis alkene than trans alkene.
A is cis – but – 2 ene and B is trans – but – 2-ene.
A is more soluble due to its polarity.