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Which of the following pathways produces...

Which of the following pathways produces 2-hexanone?
(i)1-Hexyne is treated with `H_(2)SO_(4),HgSO_(4)` and water
(ii) 3-Methyl-2-heptene is treated with `O_(3)` followed by hydrolysis
n-Butyl magnesium bromide reacts with aetaldehyde followed by hydrolysis and then chromic acid oxidation
(iv) Hydroboration oxidation of 1-hexyne

A

(i),(ii) and (iii)

B

(i) and (ii) only

C

(i),(ii) and (iv)

D

(i) and (iii) only

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The correct Answer is:
A
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Which of the following pathways produces 2-hexanone? (i) 1-Hexyne is treated with Hg^(2oplus) //"dil " H_(2)SO_(4) (ii) 3-methylhept-2-ene is treated with O_(3) followed by hydrolysis. (iii) n-butyl magnesium bromide reacts with acetaldehyde followed by hydrolysis and then oxidation with chromic acid. (iv) Hydroboratioin-oxidation of 1-hexyne.

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