Q.
the compound describes a condensation polymer which can be obtained in two ways, either treating $3$ molecules of acetone $\left( CH _{3} COCH _{3}\right)$ with conc. $H _{2} SO _{4}$ or passing propyne $\left( CH _{3}- C \equiv CH \right)$ through a red hot tube, the polymer is
AIPMTAIPMT 1989Aldehydes Ketones and Carboxylic Acids
Solution:
When acetone is treated with $H_2 SO_4$, three molecules get condensed to give mesitylene,
