both alkyl groups xial positions both alkyl group equatorial positions 10) Which

Question

both alkyl groups xial positions both alkyl group equatorial positions 10) Which of the following reactions does not yield 2-oormobutane? all-butene HBr (with peroxides) c 2 butene HBr (with peroxides b)1-butene HBr (no peroxides) 3 butene HBr Uno peroxides 11 Th first step in the acid catalyzed dehydration of an alcohol to yield an alkene is: a) loss of OH group to form a carbocation b) oss of water to form a carbocation c) protonation of the-OH group to form a protonated alcohol d) loss of a proton from the alcohol to farm a carbocation

Explanation / Answer

10) 1-Butene + HBr ----> 2- Bromo butane without hydrogen peroxide

with peroxide it will give 1-BromoButane hence

Answer is (a)

11)

first step in dehydration of alcohol using acid is protonation of OH group to for protonated alcohol which then undergoes elimination to give water

Answer is (c)

8)

reagent for conversion of cyclohexanol to cyclohexene is acid catalyst like H3PO4 (phosphoric acid)

7)

Answer is (b) enantiomers

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