Advertisements
Advertisements
प्रश्न
Name the reagents used to convert phenol into
- picric acid
- p-benzoquinone
Advertisements
उत्तर
- Concentrated nitric acid in the presence of conc. H2SO4 is used to convert phenol into picric acid.
- Chromic anhydride or sodium dichromate in the presence of H2SO4 is used to convert phenol into p-benzoquinone.
APPEARS IN
संबंधित प्रश्न
Answer in one sentence/ word.
Write the name of the electrophile used in Kolbe’s Reaction.
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Answer in brief.
Give a simple chemical test to distinguish between ethanol and ethyl bromide.
Reaction between Grignard reagent and aldehyde other than formaldehyde leads to formation of _______________
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
What is the action of following reagents on pent-3-enal?
- H2/Ni
- LiAlH4/H3O+
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
How will you bring about the following conversions?
acetone to 2-methylpropan-2-ol
Write the reactions for the preparation of carbolic acid from aniline.
What is the action of conc. H2SO4 on carbolic acid at 373 K.
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
In phenols, −OH group is attached to ___________ hybridised carbon.
Bromination of phenol, will NOT give:
Which of following elements does not react with hot concentrated sulphuric acid?
Cumene is used in the commercial method for the manufacture of ____________.
Identify 'A' and 'B' in the following series of reactions.

Which of the following is INCORRECT regarding phenol?
(I)

(II) \[\ce{P + Zn ->[\Delta] Q}\]
(III) \[\ce{P ->[Na2Cr2O7][H2SO4] R}\]
Q and R are respectively:
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Which isomer of C4H10O is optically active?
Which among the following is allylic secondary alcohol?
Identify the alcohol that reacts immediately with Lucas reagent?
The acid, which contains both -OH and -COOR groups is ______.
Amongst the following alcohols which would react fastest with cone. HCl and ZnCl2?
Which of the following compounds reacts immediately with Lucas reagent?
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Write the chemical reaction when hot copper is treated with Vapours of 1° (primary) alcohol.
Propene can be converted into propan-1-ol by:
