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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 brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
Answer in brief.
Give the equations of the reactions for the preparation of phenol from isopropyl benezene.
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
When vapours of tert.butyl alcohol are passed over hot copper, it gives _____________
Name the reagents used to convert phenol into
- picric acid
- p-benzoquinone
Write chemical equation of acetyl chloride with phenol
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
Number of oxygen atoms present in salicylaldehyde are ______.
\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]
The compound C3H8O is a/an ____________.
____________ is used for silvering mirrors.
Which of the following compounds does not react with bromine in alkaline medium?
Sodium metal with ethyl alcohol gives __________ gas.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Identify 'A' and 'B' in the following series of reactions.
The product 'C' in the following reaction is:
\[\ce{CH3CH2Br ->[alc. KCN] {'A'} ->[H3O^+][\Delta] {'B'} ->[i. LiAlH4][ii. H3O^+] {'C'}}\]
Carbolic acid is oxidised by acidified sodium dichromate to give ______.
Phenoxide ion is more stable than phenol due to the ____________.
Which of the following alcohols has tertiary allylic carbon?
(I)
(II) \[\ce{P + Zn ->[\Delta] Q}\]
(III) \[\ce{P ->[Na2Cr2O7][H2SO4] R}\]
Q and R are respectively:
Which isomer of C4H10O is optically active?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Which among the following phenolic compound is most acidic in nature?
Which among the following is not the method of preparation of phenol?
The major product obtained in the following reaction is
What is the action of nitrous acid on aniline?
Write the product when 1°, 2° and 3° alcohol vapours are passed over hot copper.
Write the chemical reaction when hot copper is treated with Vapours of 2° (secondary) alcohol.
Arrange the following compounds in order of decreasing acidity:
