11th Standard Syllabus & Materials
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 24/08/2026
Download Tamil Nadu 11th 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.
Questions + Answers key
Take MCQ Chemistry Test
1.
Which one of the following is not a meta director?
-NH2
-NO2
-COOR
-SO3H
2.
Molecular formula of benzene is ________.
C6H6
C6H5
C7H8
CH4
3.
Which one of the following is not a monocyclic aromatic hydrocarbon?
Benzene
Phenol
Toluene
Naphthalene
4.
Statement-I: Methane, ethane, propene and butane are alkane group compounds.
Statement-II: They are obeying CnH2n + 2 formula and each member differs from its proceeding member by a -CH2 group.
Statement-I and II are correct and Statement-II is correct explanation of statement-I.
Statement-I and II are correct but statement-II is not correct explanation of statement-I
Statement-I is correct but statement-II is wrong
Statement-I is wrong but statement-II is correct
5.
Which of the following is the most reactive towards electrophilic substitution reaction?
6.
The most stable conformation of Butane is
Gauche-form
Partially eclipsed form
Anti-form
Eclipsed form
7.
Which of the following conformers for ethylene glycol is most stable?
8.
The number of \(\pi\) and \(\sigma \)-bonds in toluene is respectively ___________
3 and 6
6 and 12
3 and 10
6 and 10
9.
Eclipsed form of ethane has higher energy due to _________
Torsional strain
Steric strain
Angle strain
Both (a) & (b)
10.
Peroxide effect (Kharasch effect) can be studied in case of ___________
Oct – 4 – ene
hex – 3 – ene
pent – 1 – ene
but – 2 – ene
11.
Which of the following is aliphatic saturated hydrocarbon?
C8 H18
C9 H18
C8 H14
All of these
12.
Which of the following compounds will not undergo Friedal – crafts reaction easily?(NEET)
Nitro benzene
Toluene
Cumene
Xylene
13.
Which one of the following is non aromatic?
14.
In which of the following molecules, all atoms are co-planar ___________
both (a) and (b)
15.
Consider the nitration of benzene using mixed con H2SO4 and HNO3 if a large quantity of KHSO4 is added to the mixture, the rate of nitration will be __________
unchanged
doubled
faster
slower
16.
\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is ___________
Zn
Conc H2SO4
alc. KOH
dil H2SO4
17.
Identify the compound (A) in the following reaction _______________
18.
Cis – 2 – butene and trans – 2 – butene are __________
conformational isomers
structural isomers
configurational isomers
optical isomers
19.
The IUPAC name of the following compound is _____________
trans–2–chloro–3–iodo – 2 – pentane
cis–3 – iodo – 4 – chloro – 3 – pentane
trans–3–iodo–4–chloro – 3 – pentene
cis–2 – chloro – 3 – iodo – 2 – pentene
20.
Which of the following compounds shall not produce propene by reaction with HBr followed by elemination (or) only direct elimination reaction (NEET)__________
CH3 – CH2 – CH2 – OH
H2C = C = 0
CH3 – CH2 – CH2Br
21.
The compound that will react most readily with gaseous bromine has the formula (NEET)_____________
C3H6
C2H2
C4H10
C2H4
22.
The general formula for cyclo alkanes _________
CnHn
CnH2n
Cn H2n–2
Cn H2n+2
23.
Which of the following is optically active _________
2 – methyl pentane
citric acid
Glycerol
none of these
24.
The C – H bond and C – C bond in ethane are formed by which of the following types of overlap _________
sp3 – s and sp3 – sp3
sp2 – s and sp2 – Sp2
sp – sp and sp – sp
p – s and p – p
25.
An alkyl bromide (A) reacts with sodium in ether to form 4, 5– diethyloctane, the compound (A) is _________
CH3 (CH2)3 Br
CH3(CH2)5 Br
CH3(CH2)3 CH(Br)CH3
\({ CH }_{ 3 }-{ \left( { CH }_{ 2 } \right) }_{ 2 }-CH\left( Br \right) -\underset { \overset { { | } }{ { CH }_{ 3 } } }{ { CH }_{ 2 } } \)
1.
(a)
-NH2
2.
(a)
C6H6
3.
(d)
Naphthalene
4.
(a)
Statement-I and II are correct and Statement-II is correct explanation of statement-I.
5.
(d)
6.
(c)
Anti-form
7.
(d)
8.
(c)
3 and 10
9.
(d)
Both (a) & (b)
10.
(c)
pent – 1 – ene
11.
(a)
C8 H18
12.
(a)
Nitro benzene
13.
(d)
14.
(d)
both (a) and (b)
15.
(d)
slower
16.
(c)
alc. KOH
17.
(a)
18.
(c)
configurational isomers
19.
(a)
trans–2–chloro–3–iodo – 2 – pentane
20.
(c)
H2C = C = 0
21.
(a)
C3H6
22.
(b)
CnH2n
23.
(d)
none of these
24.
(a)
sp3 – s and sp3 – sp3
25.
(d)
\({ CH }_{ 3 }-{ \left( { CH }_{ 2 } \right) }_{ 2 }-CH\left( Br \right) -\underset { \overset { { | } }{ { CH }_{ 3 } } }{ { CH }_{ 2 } } \)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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