Aniline in a set of the following reactions yielded a coloured product Y.
The structure of Y would be
1.
2.
3.
4.
Which of the following statements about primary amines is false?
1. Alkyl amines are stronger bases than aryl amines
2. Alkyl amines react with nitrous acid to produce alcohols
3. Alyl amines react with nitrous acid to produce phenols
4. Alkyl amines are stronger bases than ammonia
Acetamide and ethylamine can be distuinguished by reacting with :
1. aqueous HCl and heat
2. acid KMnO4
3. Br2 water
4. aqueous NaOH and heat
What is the decreasing order of the basicity of ethyl amines (in aquous) and ammonia ?
1.
2.
3.
4.
An organic compound A on reduction gives compound B which on reaction with chloroform and potassium hydroxide forms C. The compound C on catalytic reduction gives N-methylaniline. The compound A is [2000]
1. nitrobenzene
2. nitromethane
3. methylamine
4. aniline
The product[A] formed in the reaction;
1.
2.
3.
4.
CH3CH2NH2 contains a basic NH2 group, but CH3CONH2 does not, because;
1. acetamide is amphoteric in character
2. in CH3CH2NH2 the electron pair on N-atom is delocalized by resonance
3. in CH3CH2NH2 there is no resonance, while in acetamide the lone pair of electron on N-atom is delocalized and therefore less available for protonation
4. none of the above
Tertiary nitro compounds cannot show tautomerism because:
1. they are very stable
2. isomerises to give sec. nitro compounds
3. do not have labile H-atom
4. they are highly eactive
The reagent required to convert acetamide into methyl amine is :
1. NaOH/ Br2
2. Sodalime
3. Hot conc. H2SO4
4. PCl5
The hydrochlorides of amines form double salt with:
(1) PtCl4
(2) AuCl3
(3) both (a) and (b)
(4) none of these
The compound 'B' is
Which of the following can not be formed by Gabriel phthalimide synthesis:-
1.
2.
3.
4. C2H5NH2
Which one of the following compound give carboxylic acid by hydrolysis ?
(1)
(2)
(3)
(4) All of these
The major product of the following reaction would be
1. | |
2. | |
3. | |
4. |
1. | |
2. | |
3. | |
4. | All of these |
'x' and 'y' are respectively :
(1) | |
(2) | |
(3) | |
(4) |
A colourless organic compound gave brisk effervescence with a mixture of NaNO2 and dil.HCl. It could be:
(1) glucose
(2) oxalic acid
(3) urea
(4) benzoic acid
The product [A] formed in the reaction;
1.
2.
3.
4.
In the compound given below,
the correct order of acidic nature of the positions (X), (Y) and (Z) is:
(1) Z>X>Y
(2) X>Y>Z
(3) X>Z>Y
(4) Y>X>Z