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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
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).
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
Write the reaction to get aspirin from salicylic acid.
How will you bring about the following conversions?
acetone to 2-methylpropan-2-ol
Number of oxygen atoms present in salicylaldehyde are ______.
\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]
The compound C3H8O is a/an ____________.
Which of the following reagents are required in the conversion of phenol to salicylic acid?
Which of the following compounds does not react with bromine in alkaline medium?
Phenol is obtained from cumene ____________.
What is the product of the following reaction?
\[\ce{CH3 - CH2 - CH2 - OH ->[conc. H2SO4][\Delta]}\]
The product 'C' in the following reaction is:
\[\ce{CH3CH2Br ->[alc. KCN] {'A'} ->[H3O^+][\Delta] {'B'} ->[i. LiAlH4][ii. H3O^+] {'C'}}\]
+I effect of alkyl groups in alcohols increases the stability of ____________.
Phenoxide ion is more stable than phenol due to the ____________.
Which of the following is INCORRECT regarding phenol?
Sodium benzene sulphonate reacts with NaOH and then on acidic hydrolysis, it gives __________.
In Raschig's method for synthesis of phenol, the reactants used are ____________.
Which isomer of C4H10O is optically active?
Which of the following compounds does NOT react with sodium metal?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Identify the alcohol that reacts immediately with Lucas reagent?
Identify the role of PDC from the following.
Name the catalyst used in commercial method of preparation of phenol.
Which among the following is not the method of preparation of phenol?
Which of the following compounds reacts immediately with Lucas reagent?
The chemical test that distinguish between benzoic acid and phenol is ______.
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Convert the following :
cumene to phenol.
