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STD 12 - 7. Alcohol, phenol and ethers — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 7. Alcohol, phenol and ethers4 Marks
MCQ
$CH_3OH$ and $C_2H_5OH$ may be distinguished chemically
  • A
    By the action of $HCl$
  • ✓
    By the action of $I_2 + Na_2CO_3$
  • C
    By the action of $NH_3$
  • D
    Solubility in water
✓

Answer

Correct option: B.
By the action of $I_2 + Na_2CO_3$
b
Iodoform test can be used to distinguish the compund having alpha methyl group in it.

Methanol and Ethanol can be distinguished by Iodoform test ,As Ethanol have one methyl group present on its alpha position, while methanol have no alpha methyl group present

$CH _3 OH + I _2+ NaOH _{\text {Iodoform }}^{\stackrel{\text { warm }}{\longrightarrow} \text { (yellow) }}$ No reaction

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