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प्रश्न
Give simple chemical tests to distinguish between the following pairs of compounds :
Ethanol and phenol
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उत्तर १
| Test | Ethanol | Phenol |
| Coupling reaction | Negative test |  |
| Iodoform test |  |
Negative test |
उत्तर २
Ethanol and phenol can be chemically distinguished by Iodoform test
\[\ce{C2H5OH->[I2][NaOH][CH5CHo]->\underset{\text{Yellow precipitate}}{CHI3} v}\]
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संबंधित प्रश्न
Give reasons for the following : Boiling point of ethanol is higher in comparison to methoxymethane.
`CH_3-CH_2-Br"Alcoholic KOH"/""> B " HBR"/"">C"Na/Eather"/"">D`, the Compound D is
(A) ethane
(B) propane
(C) n-butane
(D) n-pentane
Write the structures of A, B and C in the following reactions :
\[ C_6 H_5 {NO}_2 \to^{Sn/HCI} A \to^{{NaNO}_2 /HCI}_{273 K} B \to^{H_2 O}_∆ C\]
Write a chemical reaction to show that the open structure of D-glucose contains the following :
Five alcohol groups
Alcohols have high boiling points because of ____________.
The correct order of boiling points for primary (1°), secondary (2°) and tertiary alcohol (3°) is:
A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is ______. (to the nearest integer) (Atomic mass: C = 12; H = 1; O = 16)
Arrange the following in order of increasing boiling point:
Ethoxyethane, Butanal, Butanol, n-butane
How are the following conversions carried out?
\[\ce{Methyl magnesium bromide ->2-Methylpropan-2-ol}\]
How is the following conversion carried out?
Methyl magnesium bromide → 2-Methylpropan-2-ol.
