Question

Pick the correct statements.
I. The repeating unit of polycetylene contains C=C bond
II. Acetylene ozonide involves $s{p}^3-s{p}^3$ overlap
III. Alkyne with maximum number of acidic hydrogen atoms is ethyne
IV. Ozonolysis product of acetyleneproduct of acetylene is a dial.

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

Answer 1

Answer: (C)

I, II, III, IV

All the four statements are correct.
I. The repeating unit of $polyacetylene$ contains C=C bond. A section of $polyacetylene$ can be represented as
$-CH=CH-CH=CH-CH=CH-CH=CH-CH=CH-CH=CH-$
II. Acetylene ozonide involves $s{p}^3-s{p}^3$ overlap as only single bonds are present. No multiple bonds are present.
III. Alkyne with maximum number of acidic hydrogen atoms is $ethyne$ $H-C\equiv C-H$. It has two acidic hydrogen atoms.
IV. Ozonolysis product of $acetylene$ is a dial.
$H-C\equiv C-H\underset{ozonolysis}{\overset{O_3}{\to }}OHC-CHO$