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JEE Main levelSingle correct optionDifficulty 2 of 3o1075

The cyclic acetal formed from cyclohexanone and ethylene glycol is stable towards which of the following?

Adilute aqueous $H X_{2} SO X_{4}$ , warm
Baqueous HCl, warm
Caqueous NaOH, warm
D $H X_{3} O X^{+}$ at room temperature, long standing

Answer: C

Acetals are ethers and are inert to bases and nucleophiles, but hydrolyse readily in aqueous acid through the oxocarbenium ion. Hence only the basic medium leaves the protecting group intact.

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