Question

Which of the following structures contain $ sp $ -hybridised carbon atom $ (s) $ ?
I. $ HC \equiv CH $
II. $ H _{2}C = C = CH_{2} $
III.
Iv.

• A. I, II and III
• B. I. Ill and IV
• C. II, III and IV
• D. I, II and IV

Answer 1

Answer: (D)

$HC \equiv CH, HC_{2} = C = CH_{2}$ and
contains $sp^{2}$-hybridised carbon
In both carbon are $sp$-hybridised
In central carbon is $sp$- hybridised
In
$C_{1}$ and $C_{2}$ are $sp$ -hybridised