MolSynapsequestion bank

MolSynapse / Question bank / General Organic Chemistry III: Reaction Intermediates / Free radicals

NEET levelSingle correct optionDifficulty 1 of 3g3114

Which of the following can be used to start a free radical chain reaction on heating?

AAqueous $NaOH$
BDilute $H X_{2} SO X_{4}$
CAnhydrous $AlCl X_{3}$
DBenzoyl peroxide

Answer: D

Benzoyl peroxide has a weak O-O bond that breaks homolytically on mild heating to give radicals that start the chain.

AlCl X_{3}

is a Lewis acid, and

NaOH

and dilute

H X_{2} SO X_{4}

act through ionic mechanisms.

Practice General Organic Chemistry III: Reaction Intermediates More on Free radicals

Previous questionNext question

More questions on Free radicals

Which of the following free radicals is the most stable? NEET level
Homolytic fission of a covalent bond A-B gives NEET level
The methyl radical CH3^. is best described as NEET level
Propene reacts with HBr in the presence of an organic peroxide to give mainly NEET level
In the chlorination of methane in light, which step is a chain-terminating step? NEET level
Arrange the radicals (a) CH3^., (b) CH3CH2^., (c) (CH3)2CH^. and (d) CH2=CH-CH2^. in decreasing order of stability. JEE Main level