11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil கேடில் விழுச்செல்வம் - உரைநடை - தமிழகக் கல்வி வரலாறு Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set B

Published on: 10/11/2020
11th Standard Chemistry English Medium Free Online Test Volume 2 One Mark Questions with Answer Key 2020
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 among these is not associated with aliphatic compounds?
They contain (4n+2)\(\pi\) electrons
They contain straight chain compounds
They contain branched chain compounds
They have appropriate number of H-atoms and functional groups.
2.
Which one of the following has garlic odour?
Ethane
Ethene
Ethyne
Ethanol
3.
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
4.
Which of the following compounds will exhibit cis-trans isomerism?
2-Butene
2-Butyne
1-Butene
2-Butanol
5.
Which of the following does not show optical isomerism?
Glucose
Tartaric acid
Lactic acid
Methane
6.
Which one of the following has tetrahedral shape?
HCHO
BeCl2
PbCl2
CF2Cl2
7.
Statement I : In sulphur hexafluoride, the central atom has more than eight valence electrons.
Statement II : The central atom can accommodate additional electron pairs by using outer vacant d orbitals.
Statements I and II are correct and statement II is the correct explanation of statement I
Statements I and II are correct but statement II is not the correct explanation of statement I.
Statement I is correct but statement II is wrong.
Statement I is wrong but statement II is correct.
8.
Among the following, which one is mostly present in sea water?
NaCl
NaI
KCl
MgBr2
9.
In the reaction N2 + 3H2 ⇌ 2NH3 + x kCal, one mole of N2 reacts with 3 moles of H2 at equilibrium. Then the value of ∝ (degree of dissociation) is approximately ________. P is the pressure at equilibrium
\(\frac { P\sqrt { 27{ K }_{ P } } }{ 8 } \)
\(\frac { 8P }{ { K }_{ P }\sqrt { 27 } } \)
\(\frac { P\sqrt { 27 } }{ 8{ K }_{ P } } \)
\(\frac{n}{v}\)
10.
Statement I. Addition of an inert gas at constant volume has no effect on equilibrium.
Statement II. When an inert gas is added, the total number of moles of gases present in the container increases and total pressure also increases, the partial pressure of the products and reactants are unchanged.
Statement I and II are correct but statement II is not the correct explanation of I
Statement I and II are correct and statement II is the correct explanation of I.
Statement I is correct but statement II is not correct.
Statement I is wrong but statement II is correct
11.
Statement I: In dissociation of PCI5 to PCl3 and Cl2,Kp> Kc
Statement II : In dissociation of PCI5, ∆ng = -ve and so K, > Kc
Statement I & II are correct and statement II is the correct explanation of statement 1.
Statement I & II are correct but statement II is not the correct explanation of statement I.
Statement I is correct but statement II is wrong
Statement I is wrong but statement II is correct
12.
The shape of IF7 molecule is ___________
square planar
tetrahedral
Pentagonal bipyramidal
linear
13.
Which one is incorrect match of reactions ?

\(C{ H }_{ 3 }-C{ H }_{ 2 }-Br\overset { aq.\quad KOH }{ \longrightarrow } C{ H }_{ 3 }-C{ H }_{ 2 }OH\) ⟶ Nucleophilic substitution reaction

\(\left( C{ H }_{ 3 } \right) C-Cl\overset { \overset { + }{ H } }{ \longrightarrow } { \left( C{ H }_{ 3 } \right) }_{ 3 }C-C{ H }_{ 2 }+{ H }_{ 2 }O+{ Cl }^{ - }\) ⟶ Nucleophilic substitution reaction
14.
Which compound has planar structure?
XeF4
XeOF2
XeO2F2
XeO4
15.
The chair form is ___________ stabole than boat form by potential energy kJ/mol.
More, 44 kJ/mol
Less, 44 kJ/mol
More, 12.55 kJ/mol
Less, 4 kJ/mol
16.
In which of the following compound has only one type of hybridised carbon atom?



All of these
17.
For associative solutes ____________
i < 1 and a < 1
i > 1 and a >. 1
i < 1 and a < 1
i > 1 and a < 1
18.
The temperature at which the vapour pressure of a liquid equals external pressure is called __________
freezing point
boiling point
melting point
critical temperature
19.
Sodium nitropruside reacts with sulphide ion to give a purple colour due to the formation of _________
[Fe(CN)5 NO]3-
[Fe(NO)5 CN]+
[Fe(CN)5NOS]4-
[Fe (CN)5 NOS]3-
20.
Structure of the compound whose IUPAC name is 5,6 - dimethylhept - 2 - ene is ___________



None of these
21.
Which one of the following is the likely bond angles of sulphur tetrafluoride molecule ?
120o,80o
109o,28
90o
89o,117o
22.
Which one of the following gases has the lowest value of Henry's law constant ?
N2
He
CO2
H2
23.
Equimolar concentrations of H2 and I2 are heated to equilibrium in a 1 litre flask. What percentage of initial concentration of H2 has reacted at equilibrium if rate constant for both forward and reverse reactions are equal ____________
33%
66%
(33)2%
16.5%
24.
Assertion (A): C2 Dr CI FI can farm 6 different geometrical isomers.
Reason (R): Each one structure is geometrical isomer of other five structures.
Codes:
(a) Both A and Rare true and Ris correct explanation of A
(b) Both A and R are true but R is not correct explanation of A.
(c) A is true but R is false
(d) Both A and R are false.
Both A and Rare true and Ris correct explanation of A
Both A and R are true but R is not correct explanation of A.
A is true but R is false
Both A and R are false.
25.
Assertion (A) : \(C{ H }_{ 3 }-\overset { + }{ C } H-C{ H }_{ 3 }\) has 6 hyper-conjugative hydrogens. While \(C{ H }_{ 3 }-\overset { + }{ C } H-C{ H }_{ 2 }-C{ H }_{ 3 }\) has 5 hyper-conjugative hydrogens.
Reason (R) : \(C{ H }_{ 3 }-\overset { + }{ C } H-C{ H }_{ 3 }\) is more stable than \(C{ H }_{ 3 }-\overset { + }{ C } H-C{ H }_{ 2 }-C{ H }_{ 3 }\)
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are false.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
Both A and R are false
1.
(a)
They contain (4n+2)\(\pi\) electrons
2.
(c)
Ethyne
3.
(a)
Statement-I and II are correct and Statement-II is correct explanation of statement-I.
4.
(a)
2-Butene
5.
(d)
Methane
6.
(d)
CF2Cl2
7.
(a)
Statements I and II are correct and statement II is the correct explanation of statement I
8.
(a)
NaCl
9.
(a)
\(\frac { P\sqrt { 27{ K }_{ P } } }{ 8 } \)
10.
(b)
Statement I and II are correct and statement II is the correct explanation of I.
11.
(c)
Statement I is correct but statement II is wrong
12.
(c)
Pentagonal bipyramidal
13.
(d)
\(\left( C{ H }_{ 3 } \right) C-Cl\overset { \overset { + }{ H } }{ \longrightarrow } { \left( C{ H }_{ 3 } \right) }_{ 3 }C-C{ H }_{ 2 }+{ H }_{ 2 }O+{ Cl }^{ - }\) ⟶ Nucleophilic substitution reaction
14.
(a)
XeF4
15.
(a)
More, 44 kJ/mol
16.
(b)

17.
(a)
i < 1 and a < 1
18.
(b)
boiling point
19.
(c)
[Fe(CN)5NOS]4-
20.
(a)

21.
(d)
89o,117o
22.
(c)
CO2
23.
(a)
33%
24.
(c) A is true but R is false
25.
(b) Both A and R are true but R is not the correct explanation of A.
11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 11th Standard Subjects

Maths

Commerce

Economics

Biology

Business Maths and Statistics

Accountancy

Computer Science

Physics

Chemistry

Maths

Biology

Economics

Physics

Chemistry

History

Business Maths and Statistics

Computer Science

Accountancy

Computer Applications

History

Computer Technology

Commerce

Computer Applications

Computer Technology

Tamil

English

French
Tamilnadu Stateboard Standards