The product of the following reaction is
→iiiHI, heatiHNO2,0-5°Ciidil H2SO4,heat
The amine that reacts with Hinsberg's reagent to give an alkali insoluble product is:-
The major product of the following reaction is -
-
Aniline when diazotised in cold and then treated with dimethylaniline, gives a coloured product. It's structure would be :
A: Lower aliphatic amines are soluble in water.
R: Lower aliphatic amines can form intermolecular H-bonding with H2O.
Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
Both Assertion & Reason are true but the reason is not the correct explanation of the assertion
Assertion is a true statement but Reason is false
Both Assertion & Reason are false statements
Assertion(A): Secondary amines have higher boiling points than their respective tertiary isomers.
Reason(R): H-bonding is absent in tertiary amines.
Both Assertion & Reason are true and the reason is not the correct explanation of the assertion
Both Assertion & Reason are true and the reason is the correct explanation of the assertion
Assertion(A): Amines have higher b.p than those of the corresponding alcohols.
Reason(R): Alcohols possess intramolecular H-bonding.
A: Nitration of aniline at the low temperature given 47% m-nitroaniline.
R: In acidic medium, NH2 group is converted into -N+H3 group which is m-directing.
Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
Assertion is a true statement but Reason is false.
A: C6H5NH2 is a 1° amine and can be prepared by Gabriel phthalimide synthesis.
R: C6H5NH2 is strongly basic in nature.
Both Assertion & Reason are false statements.
Assertion(A): pKb of aniline is higher than ethylamine.
Reason(R): The lone pair of -NH2 group in aniline is involved in conjugation with a benzene ring.
Assertion(A): Aniline does not undergo Friedel-Crafts reaction.
Reason(R): Diazonium salts of aromatic amines are more stable than those of aliphatic amines.
Assertion(A): (I) is more basic than (II)
Reason(R): Delocalisation of lone pair of electrons decreases the basic strength.
An amine that gives the carbyl amine test is -
What is the proper sequence of the reagent in the Hoffmann's degradation reaction?
Br2, KOH, H2O
KOH, Br2, H2O
H2O, KOH, Br2
KOH, H2O, Br2
Carbylamine reaction tubes are not thrown into sink, to avoid bad odour, but are treated with conc. HCl to give:
RCOOH+NH3
RNH2
RNH2+HCOOH
RCOOH+NH2
In hypobromite reaction of amide, the carbonyl carbon atom is lost as:
CO
CO2
CO32-
None of the above
When methyl iodide is treated with ammonia, the product obtained is:
Methylamine
Dimethylamine
Trimethylamine
All of the above
Which nitro compound will show tautomerism?
C6H5NO2
CH33CNO2
CH3CH2NO2
o-nitrotoluene
Diethylamine on oxidation with KMnO4 gives:
ethanal
propanone
tetraethyl hydrazine
none of these
Urea reacts with hydrazine to form:
Nitrogen
Phenyl hydrazine
Semicarbazide
Urethane
The main product in the reaction,
HCONHR→PyridinePOCl3 is:
RCN
RNC
RCNO
RNCO
R-N=→C+HgO→A+HgO2 ; What is A?
RCONH2
R-NCO
RCOOH
Which of the following can be used to distinguish acetamide and urea?
Biuret test
Fehling's solution
Hofmann's reaction
NaOH solution
A colourless, odourless and non-combustible gas is liberated when ethylamine reacts with:
NaOH
CH3COCl
NaNO2+HCl
H2SO4
Carbonyl chloride reacts with ammonia to form:
NH2CONH2
CH3COONH4
CH3CONH2
When aniline is heated with glacial acetic acid in the presence of anhydrous ZnCl2, the product is:
Acetamide
Acetanilide
Phenyl acetamide
Chlorobenzene
Carcinogens are the products of the reaction between:
R2NH+HNO2
R3N+HNO2
RNH2+HNO2
Hofmann's rearrangement During the conversion of an amide to amine involves ..... rearrangement.
Intermolecular
Intramolecular
Both (1) and (2)
Aniline is a weaker base than ethylamine because:
lone pair of electrons of N-atom is not freely available for coordination due to resonance than in ethylamine.
Its b.p. is higher than that of ethylamine.
It does not produce a sufficient concentration of OH- ions in solution.
It is insoluble in water while ethylamine is soluble in water.
Diethyl carbonate on heating with ammonia gives:
C2H5NH2
C2H53N
C2H52NH
Urea
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