Question

Which of the following structures contain $sp$ -hybridised carbon atom $(s)$ ?
I. $HC\equiv CH$
II. $H_{2}C=C=C{H}_2$
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)

$HC\equiv CH,H{C}_2=C=C{H}_2$ and
contains $s{p}^2$-hybridised carbon
In both carbon are $sp$-hybridised
In central carbon is $sp$- hybridised
In
$C_1$ and $C_2$ are $sp$ -hybridised