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In reaction sequence CH2 = CH2 Hypochlorous acid → M → R → CH2OH molecule 'M' and reagent 'R' respectively are:

1. CH3CHCl and NaOH
2. CH3CH2OH and H2SO4
3. CH3CHCl2OH and aqueous NaHCO3
4. CH2 = CH2 and heat

Correct answer: CH3CHCl and NaOH

Solution

HOCl adds to ethene to form CH3CHCl (M). NaOH then reacts with CH3CHCl to yield CH2OH.

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