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Alcohols, Phenols, and Ethers — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAlcohols, Phenols, and Ethers1 Mark
MCQ
Which among the following reactions does not give methyl alcohol?
  • A
    The reaction of ethylene with H2​SO4​ at 80°C
  • B
    The reaction of water gas with hydrogen at high temperature
  • C
    Alkaline hydrolysis of methyl bromide
  • D
    Both a and b
✓

Answer

  1. The reaction of ethylene with H2​SO4​ at 80°C

Explanation:

The reaction of ethylene with H2​SO4​ at 80°C gives ethyl hydrogensulphate.

CH2​=CH2​ + H2​SO4​ → CH3​CH2​OSO2​OH

Water gas (carbon monoxide and hydrogen) at high temperature gives methanol.

CO + 2H2 ​→ CH3​OH.

Alkaline hydrolysis of methyl bromide gives methanol

CH3​Br + H2​O → CH3​OH + HBr.

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