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Published on: 13/10/2020
12th Standard Chemistry Organic Nitrogen Compounds English Medium Free Online Test One Mark Questions 2020 - 2021
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
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1.
The intermediate formed on electrolytic reduction of nitrobenzene in cone.H2SO4 is _______.
C6H5NH-NHC6H5
C6H5-NHOH
C6H5-N=N-C6H5
All of these
2.
The nitro group can be reduced to primary amino group by _________
Sn / conc. HCI
Zn dust
Zn / NH4 CI
Zn / NaOH
3.
p-amino phenol is the product of reducing nitrobenzene in _________
acid medium
basic medium
electrolytic reduction
neutral medium
4.
The compound which gives an oily nitrosoamine on reaction with nitrous acid at low temperature is ____________
C2H5NH2
(CH3)2NH
(CH3)3N
(CH3)2CHNH2
5.
Amines have __________ odour.
carbolic
mustard oil
fishy
garlic
6.
The product obtained when nitrobenzene is treated with Zn/NaOH is
aniline
azoxybenzene
azobenzene
hydrazobenzene
7.
The test for aniline is
Fehling's test
Ferric chloride test
Bromination test
Riemer Tiemann test
8.
Which of the following compounds has the smell of bitter almonds?
aniline
nitro methane
benzene sulphonic acid
nitrobenzene
9.
The compound that is most reactive towards electrophilic nitration is
Toluene
benzene
benzoic acid
nitrobenzene
10.
Bromo ethane reacts with silver nitrite to give
C2H5NO2
C2H5-O-NO
C2H5Ag+NaBr
C2H5NC
11.
The gas leaked from storage tank of the union Carbide plant in Bhopal gas tragedy was
Phosgene
methyl isocyanide
methyl isocyanate
methyl isothiocyanide
12.
Which among the following reactions will give a secondary amine?
\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{Br}_{2} / \mathrm{KOH}}{\longrightarrow}\)
\(\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)
\({ CH }_{ 3 }CN\xrightarrow [ Na/{ C }_{ 2 }{ H }_{ 5 }OH ]{ } \)
\(\mathrm{CH}_{3} \mathrm{NC} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)
13.
The above structure represents
Vitamin B12
Vitamine B6
dopamine
Histamine
14.
Identify X in the sequence give below
15.
P Product ‘P’ in the above reaction is _______.
16.
Which of the following amines does not undergo acetylation?
t – butylamine
ethylamine
diethylamine
triethylamine
17.
C6H5NO2 \(\overset { Fe/Hel }{ \longrightarrow } A\overset { { NaNO }_{ 2 }/HCl }{ \underset { 273K }{ \longrightarrow } } B\overset { { H }_{ 2 }O }{ \underset { 283 }{ \longrightarrow } } C \) C' is _______.
C6H5 - OH
C6H5 - CH2OH
C6H5 - COH
C6H5NH2
18.
Aniline + benzoylchloride \(\overset { NaOH }{ \longrightarrow } \)C6H5 - NH - COC6 H5 this reaction is known as ______.
Friedel – crafts reaction
HVZ reaction
Schotten – Baumann reaction
none of these
19.
Which one of the following will not undergo Hofmann bromamide reaction.
CH3CONHCH3
CH3CH2CONH2
CH3CONH2
C6H5CONH2
20.
Which of the following reagent can be used to convert nitrobenzene to aniline.
Sn / HCl
ZnHg / NaOH
Zn/NH4Cl
All of these
1.
(b)
C6H5-NHOH
2.
(a)
Sn / conc. HCI
3.
(c)
electrolytic reduction
4.
(b)
(CH3)2NH
5.
(c)
fishy
6.
(d)
hydrazobenzene
7.
(c)
Bromination test
8.
(d)
nitrobenzene
9.
(a)
Toluene
10.
(a)
C2H5NO2
11.
(c)
methyl isocyanate
12.
(d)
\(\mathrm{CH}_{3} \mathrm{NC} \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}\)
13.
(b)
Vitamine B6
14.
(a)
15.
(b)
16.
(d)
triethylamine
17.
(a)
C6H5 - OH
18.
(c)
Schotten – Baumann reaction
19.
(a)
CH3CONHCH3
20.
(a)
Sn / HCl
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