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TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A

Published on: 28/11/2025
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.
Which of the following is caro's acid?
H2SO5
H2S2O8
H2S2O7
CF3COOOH
2.
Carbylamine test is not answered by
CH3NH2
(CH3)3N
C6H5NH2
C6H5CH2NH2
3.
Nef carbonyl synthesis given by
C6H5CHO

C6H5CH2NO2
All of these
4.
Two molecules of propionitrile in the presence of Na/Ether react to form 3 imino - 2 methylpentanenitrile. This reaction is known as ____________
Baltz -schiemann reaction
Thorpe nitrile condensation
Gomberg reaction
Schotten - Baumann reaction
5.
The major product of the nation between m - dinitrobenzene with (NH4)2 Sx is




6.
Identify X in the following sequence of reaction
\(\mathrm{C}_{4} \mathrm{H}_{7} \mathrm{OCl} \stackrel{\mathrm{NH}_{3}}{\longrightarrow} \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{ON} \stackrel{\mathrm{Br}_{2} \mathrm{KOH}}{\longrightarrow}\)\(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
(CH3)2CHCOCl
CH3CH2CH(OH)CH2Cl
CH3CH2CH2COCl
ClCH2CH2CH2CHO
7.
The major product of the following reaction
8.
Among the following, the reaction that proceeds through an electrophilic substitution is : _______.
9.
Identify X in the sequence give below
10.
Ammonium salt of benzoic acid is heated strongly with and the product so formed is reduced and then treated with NaNO2 / HCl at low temperature. The final compound formed is _______.
Benzene diazonium chloride
Benzyl alcohol
Phenol
Nitrosobenzene
11.
P Product ‘P’ in the above reaction is _______.
12.
IUPAC name for the amine
3 – Bimethylamino – 3 – methyl pentane
3 (N,N – Triethyl) – 3- amino pentane
3 – N,N – trimethyl pentanamine
N,N – dimethyl – 3- methyl - pentan - 3 amine
13.
When is reduced with Sn / HCl the pair of compounds formed are _______.
Ethanol, hydrozylamine hydrochloride
Ethanol, ammonium hydroxide
Ethanol, NH2OH
C3H5NH2, H2O
14.
Which one of the following is most basic?
2,4 – dichloroaniline
2,4 – dimethyl aniline
2,4 – dinitroaniline
2,4 – dibromoaniline
15.
Which of the following amines does not undergo acetylation?
t – butylamine
ethylamine
diethylamine
triethylamine
16.
Secondary nitro alkanes react with nitrous acid to form _______.
red solution
blue solution
green solution
yellow solution
17.
C5H13N reacts with HNO2 to give an optically active compound – The compound is _______.
pentan – 1- amine
pentan – 2- amine
N,N – dimethylpropan -2-amine
diethyl methyl amine
18.
Nitrobenzene on reaction with Con HNO3 / H2SO4 at 80-100oC forms which one of the following products?
1,4 – dinitrobenzene
2,4,6 – tirnitrobenzene
1,2 – dinitrobenzene
1,3 – dinitrobenzene
19.
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
20.
_______.
H3PO2 and H2O
H+/H2O
HgSO4/H2SO4
Cu2Cl2
21.
The order of basic strength for methyl substituted amines in aqueous solution is _________.
N(CH3)3> N(CH3)2H> N(CH3)H2> NH3
N(CH3)H2>N(CH3)2H > N(CH3)3>NH3
NH3> N(CH3)H2> N(CH3)2 H>N(CH3)3
N(CH3)2H>N(CH3)H2> N(CH3)3> NH3
22.
23.
Which of the following reaction is not correct.
CH3 CH2 NH2 \(\overset { { HNO }_{ 2 } }{ \longrightarrow } \)CH3CH2 OH + N2
CH2 CONH2 \(\overset { { Br }_{ 2 }/NaOH }{ \longrightarrow } \)CH3 NH2
none of these
24.
The product formed by the reaction an aldehyde with a primary amine ________.
carboxylic acid
aromatic acid
schiff ’s base
ketone
25.
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
26.
Which one of the following nitro compounds does not react with nitrous acid.
CH3 -CH2 -CH2 -NO2
(CH3)2 CH - CH2NO2
(CH3)3 C NO2
\({ CH }_{ 3 }-\underset { \overset { || }{ O } }{ C } -\underset { \overset { || }{ { CH }_{ 3 } } }{ CH } -{ NO }_{ 2 }\)
27.
CH3CH2 Br \(\overset { aqNaOH }{ \underset { \Delta }{ \longrightarrow } } A\overset { { KMnO }_{ 4 }{ /H }^{ + } }{ \underset { \Delta }{ \longrightarrow } } B\overset { { NH }_{ 3 } }{ \underset { \Delta }{ \longrightarrow } } C\overset { { Br }_{ 2 }/NaOH }{ \longrightarrow } D\) D' is________.
bromomethane
α - bromo sodium acetate
methanamine
acetamide
28.
Which one of the following will not undergo Hofmann bromamide reaction.
CH3CONHCH3
CH3CH2CONH2
CH3CONH2
C6H5CONH2
29.
The method by which aniline cannot be prepared is _________.
degradation of benzamide with Br2 / NaOH
potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution.
reduction of Nitrobenzene with LiAlH4
reduction of nitrobenzene by Sn / HCl
30.
Which of the following reagent can be used to convert nitrobenzene to aniline.
Sn / HCl
ZnHg / NaOH
Zn/NH4Cl
All of these
1.
(a)
H2SO5
2.
(b)
(CH3)3N
3.
(a)
C6H5CHO
4.
(b)
Thorpe nitrile condensation
5.
(c)

6.
(c)
CH3CH2CH2COCl
7.
(b)
8.
(b)
9.
(a)
10.
(b)
Benzyl alcohol
11.
(b)
12.
(d)
N,N – dimethyl – 3- methyl - pentan - 3 amine
13.
(a)
Ethanol, hydrozylamine hydrochloride
14.
(b)
2,4 – dimethyl aniline
15.
(d)
triethylamine
16.
(b)
blue solution
17.
(b)
pentan – 2- amine
18.
(d)
1,3 – dinitrobenzene
19.
(a)
C6H5 - OH
20.
(a)
H3PO2 and H2O
21.
(d)
N(CH3)2H>N(CH3)H2> N(CH3)3> NH3
22.
(d)
23.
(b)
24.
(c)
schiff ’s base
25.
(c)
Schotten – Baumann reaction
26.
(c)
(CH3)3 C NO2
27.
(c)
methanamine
28.
(a)
CH3CONHCH3
29.
(b)
potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution.
30.
(a)
Sn / HCl
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