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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.
Explain why phenol is more acidic than ethyl alcohol.
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Write the reaction to get aspirin from salicylic acid.
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
Write the reactions for the preparation of carbolic acid from aniline.
Number of oxygen atoms present in salicylaldehyde are ______.
\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]
The compound C3H8O is a/an ____________.
In phenols, −OH group is attached to ___________ hybridised carbon.
Phenol is obtained from cumene ____________.
The CORRECT decreasing order of boiling points for isomeric primary (1°), secondary (2°) and tertiary (3°) alcohols is ____________.
The secondary alcohol is ____________.
Phenol is ____________.
Propane when treated with cold cone. H2SO4 forms a compound which on heating with water gives ______.
Carbolic acid is oxidised by acidified sodium dichromate to give ______.
____________ will NOT undergo acetylation.
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Identify the reagent A used in the following conversion.
\[\ce{Phenol ->[A] Benzoquinone}\]
Which among the following phenolic compound is most acidic in nature?
Name the catalyst used in commercial method of preparation of phenol.
Which of the following compounds reacts immediately with Lucas reagent?
The product C in the following reaction is
The chemical test that distinguish between benzoic acid and phenol is ______.
Explain: Phenols are acid while alcohol is neutral.
What is the name of isopropyl alcohol according to the carbinol system?
Which of the following is primary benzylic alcohol?
Which of the following is trihydric phenol?
