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प्रश्न
Write the reactions for the preparation of carbolic acid from aniline.
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उत्तर
Aniline is treated with nitrous acid [NaNO2 + HCl] at low temperature to obtain benzene diazonium chloride, which on hydrolysis gives carbolic acid (phenol).
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संबंधित प्रश्न
Answer in one sentence/ word.
Hydroboration-oxidation of propene gives _________.
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Answer in brief.
Give the equations of the reactions for the preparation of phenol from isopropyl benezene.
Reaction between hot conc. HI and anisole gives ______________
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
Write IUPAC name of crotonyl alcohol.
With the help of chemical equations show what happens when cumene hydroperoxide is treated with dil. acid.
Write Kolbe’s reaction.
In phenols, −OH group is attached to ___________ hybridised carbon.
Phenol is obtained from cumene ____________.
The secondary alcohol is ____________.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Propane when treated with cold cone. H2SO4 forms a compound which on heating with water gives ______.
The number of isomeric alcohols possible with the formula C4H10O is ____________.
Identify 'A' and 'B' in the following series of reactions.
Carbolic acid is oxidised by acidified sodium dichromate to give ______.
Phenoxide ion is more stable than phenol due to the ____________.
Which of the following is INCORRECT regarding phenol?
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 among the following compounds is used to prepare solid fuel using calcium acetate?
Which among the following is allylic secondary alcohol?
Which of the following compounds does NOT react with sodium metal?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Which of the following on oxidation yields ethyl methyl ketone?
Identify the alcohol that reacts immediately with Lucas reagent?
Amongst the following alcohols which would react fastest with cone. HCl and ZnCl2?
Write the chemical reaction when hot copper is treated with Vapours of 2° (secondary) alcohol.
