MEDIUMMCQ SINGLENEET ChemistryOrganic ChemistryAldehydes and ketonesPreparation of Aldehydes & Ketones

Which of the following yield 2 moles of formaldehyde on ozonolysis?

A.CH

B.CH2✓ Correct

C.CH3—CH

D.C6H6

Explanation

When the alkene is subjected to ozonolysis, the double bond of the alkene will break and there will be formation of ozonide. This ozonide on reaction with zinc dust forms carbonyl compound. So, if we want 2 moles of formaldehyde or methanal, ethene must be the reactant.

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