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प्रश्न
Write two points of difference between the properties of phenol and ethyl alcohol.
Write four points of difference between the properties of phenol and ethyl alcohol.
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उत्तर
| Phenol | Ethyl alcohol | |
| i. | Phenol is a low melting solid. | Ethyl alcohol is liquid. |
| ii. | The aqueous solution of phenol turns blue litmus to red, i.e., phenol is weakly acidic. | The aqueous solution of ethyl alcohol is neutral to litmus, i.e, ethyl alcohol is neutral. |
| iii. | Phenol reacts with aqueous NaOH to form sodium phenoxide. | Ethyl alcohol does not react with aqueous NaOH. |
| iv. |
Phenol reacts with neutral ferric chloride solution to give deep purple colouration of ferric phenoxide. |
Ethyl alcohol does not react with neutral ferric chloride. |
संबंधित प्रश्न
Answer in one sentence/ word.
Write the IUPAC name of alcohol having molecular formula C4H10O which is resistant towards oxidation.
An ether (A), C5H12O, when heated with excess of hot HI produce two alkyl halides which on hydrolysis form compound (B) and (C), oxidation of (B) gave and acid (D), whereas oxidation of (C) gave a ketone (E). Deduce the structural formula of (A), (B), (C), (D), and (E).
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
Reaction between hot conc. HI and anisole gives ______________
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
Write IUPAC name of crotonyl alcohol.
What is the action of following reagents on pent-3-enal?
- H2/Ni
- LiAlH4/H3O+
Write Kolbe’s reaction.
Name the reagents used to convert phenol into
- picric acid
- p-benzoquinone
How will you bring about the following conversions?
2-methyl propan-2-ol to 2-methylpropene
Write the reactions for the preparation of carbolic acid from aniline.
Number of oxygen atoms present in salicylaldehyde are ______.
Which of the following compounds does not react with bromine in alkaline medium?
Phenol is ____________.
____________ will NOT undergo acetylation.
In Raschig's method for synthesis of phenol, the reactants used are ____________.
The number of moles of hydrogen gas formed when 2 moles of 2-methylpropan-2-ol reacts with aluminium is ____________.
Which of the following conversion explains the acidic nature of alcohols?
The number of σ bonds in carbolic acid is ______.
Identify the reagent A used in the following conversion.
\[\ce{Phenol ->[A] Benzoquinone}\]
The acid, which contains both -OH and -COOR groups is ______.
Which of the following compounds has lowest boiling point?
The product C in the following reaction is
The chemical test that distinguish between benzoic acid and phenol is ______.
Arrange the following compounds in an increasing order of their solubility in water:
What is the commercial method of preparation of phenol?
Arrange the following compounds in order of decreasing acidity:
