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: 26/07/2018
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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.
Mathematically, the third law of thermodynamics is expressed as _______
\(\overset{\lim}{T\rightarrow 0}{ S=0 } \)
\(\overset{\lim}{T\rightarrow \infty} {S=1 } \).
ΔU = q + w
G = H - TS
2.
Consider the isoelectronic species Na+, Mg2+, F- and O2-. The correct order of increasing length of their radius is ______________
F- < O2- < Mg2+< Na+
Mg2+ < Na+ < F- < O2-
O2- < F- < Na+ < Mg2+
O2- < F- < Mg2+ < Na+
3.
The value of critical pressure of CO2 is ___________.
173 atm
73 atm
1 atm
22.4 atm
4.
The oxidation number of fluorine in all its compounds is equal to ______________.
-1
+1
-2
+2
5.
Which one of the following gives green spark in fire works?
Magnesium chloride
Sodium chloride
Barium bromide
Potassium iodide
6.
The orbital with n = 3 and l = 2 is____.
3s
3p
3d
3j
7.
The longest form of periodic table was constructed by______
Dmitri Mendeleev
Henry Moseley
Lothar Meyer
Newlands
8.
Consider the following statements
(i) In Chancourtois classification, elements differed from each other in atomic weight by 16 or multiples of 16 fell very nearly on the same vertical line.
(ii) Mendeleev's periodic law is based on atomic weight.
(iii) Mendeleev listed the 117 elements known at that time and are arranged in the order of atomic numbers.
Which of the following statement is/are not correct?
(i) only
(ii) and (iii)
(iii) only
(i),(ii) ,(iii)
9.
The region where the probability density function of electron reduces to zero is called__________.
orbit
orbital
nodal surface
subshell
10.
Which of the following can oxidise Hydrogen peroxide?
acidified KMnO4
Cu
dil. HNO3
CrO2Cl2
11.
Which one of the following is the standard for atomic mass?
1H1
6C12
6C14
8O16
12.
Which of the following statements is true about Ca(OH)2?
It is used in the preparation of bleaching powder
It is a light blue solid
It is a light blue solid
It is used in the manufacture of cement
13.
Which of the following statement is incorrect?
The ionization potential of nitrogen is greater than that of oxygen
The electron affinity of F is greater than that of Cl.
The ionization potential of Mg is greater than aluminium.
The electronegativity of F is greater than that of Cl.
14.
Equal volume of N2 and H2 react to form ammonia under suitable condition then the limiting reactant is ____________.
H2
N2
NH3
No Reactant is a limiting regent
15.
Unit of Avogadro's number is _______________.
mol
g
mol -1
No unit
16.
Bohr's equation for energy of an electron in a hydrogen atom is given as______
\(E=\frac { -1312 }{ { n }^{ 2 } } KJ{ mol }^{ -1 }\)
\(E=\frac { -1312 }{ { n }^{ 2 }{ h }^{ 2 } } KJ{ mol }^{ -1 }\)
E = hv
\(E=\frac { 4{ \pi }^{ 2 }{ me }^{ 4 } }{ { n }^{ 2 }{ h }^{ 2 } } KJ{ mol }^{ -1 }\)
17.
The element with atomic number 31 belongs to _____
s-block
p-block
d-block
f-block
18.
The rice is cooked earlier in pressure cooker because
boiling point increases with increasing pressure
boiling point decreases with increasing pressure
Internal energy is not lost while cooking in pressure cooker
Extra pressure of pressure cooker softens the rice
19.
Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are ___________
metalloids
transition elements
non-metals
gases
20.
Consider the following statements
1. Alkali metals are soft.
2. Alkali metals show high reactivity
3. I.E of alkali metal decreases down the group
Which of the following statement(s) given above is/ are correct?
1 & 3
only I
2 & 3
1, 2 & 3
21.
The first list of 23 chemical elements was published by _____ in the year 1789.
Berzelius
Dobereiner
Lavoisier
John Dalton
22.
Maximum oxidation state is present in the central metal atom of which compound
CrO2Cl2
MnO2
[Fe(CN)6]3-
MnO
23.
At identical temperature and pressure, the rate of diffusion of hydrogen gas is 3\(\sqrt { 3 } \) times that of a hydrocarbon having molecular formula CnH2n-2. What is the value of n ?
8
4
3
1
24.
The correct increasing order of the oxidation state of sulphur in the anions \({ SO }_{ 4 }^{ 2- },{ SO }_{ 3 }^{ 2- }{ , }{ { S }_{ 2 }{ O } }_{ 4 }^{ 2- },{ S }_{ 2 }{ O }_{ 6 }^{ 2- }\) is _________.
\({ SO }_{ 3 }^{ 2- }<{ SO }_{ 4 }^{ 2- }<{ { S }_{ 2 }{ O } }_{ 4 }^{ 2- }<{ S }_{ 2 }{ O }_{ 6 }^{ 2- }\)
\({ SO }_{ 4 }^{ 2- }<{ SO }_{ 4 }^{ 2- }<{ S }_{ 2 }{ O }_{ 6 }^{ 2- }<{ SO }_{ 3 }^{ 2- }\)
\({ { S }_{ 2 }{ O } }_{ 4 }^{ 2- }<{ SO }_{ 3 }^{ 2- }<{ S }_{ 2 }{ O }_{ 6 }^{ 2- }<{ SO }_{ 4 }^{ 2- }\)
\({ S }_{ 2 }{ O }_{ 6 }^{ 2- }<{ SO }_{ 4 }^{ 2- }<{ SO }_{ 4 }^{ 2- }<{ SO }_{ 3 }^{ 2- }\)
25.
Which of the following configuration is correct for iron?
1s22s22p63s23p64s23d7
1s22s22p63s23p64s23d6
1s22s22p63s23p63d7
1s22s22p63s23p64s23d7
26.
Rusting of iron articles is an example of ___________ reaction
Combustion
decomposition
redox
hydrolysis
27.
In multi-electron atom,4s-orbital is lower in energy than __________
3d-orbital
3p-orbital
2s-orbital
2p-orbital
28.
The oxidation number of hydrogen in LiH is _________
+1
-1
+2
-2
29.
Fe2 + \(\longrightarrow\) Fe3+ + e- is a ________ reaction.
redox
reduction
oxidation
decomposition
30.
Based on equation E = \(-2.178\times { 10 }^{ -18 }J\left( \frac { { Z }^{ 2 } }{ { n }^{ 2 } } \right) \)certain conclusions are written. Which of them is not correct?
Equation can be used to calculate the change in energy when the electron changes orbit
For n = 1, the electron has a more negative energy than it does for n = 6 which means that the electron is more loosely bound in the smallest allowed orbit
The negative sign in equation simply means that the energy of electron bound to the nucleus is lower than it would be if the electrons were at the infinite distance from the nucleus.
Larger the value of n, the larger is the orbit radius.
31.
The number of water molecules in a drop of water weighing 0.018 g is ________.
6.022\(\times\)1026
6.022\(\times\)1023
6.022\(\times\)1020
9.9 \(\times\)1022
32.
40 ml of methane is completely burnt using 80 ml of oxygen at room temperature The volume of gas left after cooling to room temperature is _______.
40 ml CO2 gas
40 ml CO2 gas and 80 ml H2O gas
60 ml CO2 gas and 60 ml H2O gas
120 ml CO2 gas
1.
(a)
\(\overset{\lim}{T\rightarrow 0}{ S=0 } \)
2.
(b)
Mg2+ < Na+ < F- < O2-
3.
(b)
73 atm
4.
(a)
-1
5.
(a)
Magnesium chloride
6.
(c)
3d
7.
(b)
Henry Moseley
8.
(c)
(iii) only
9.
(c)
nodal surface
10.
(a)
acidified KMnO4
11.
(b)
6C12
12.
(a)
It is used in the preparation of bleaching powder
13.
(b)
The electron affinity of F is greater than that of Cl.
14.
(b)
N2
15.
(d)
No unit
16.
(a)
\(E=\frac { -1312 }{ { n }^{ 2 } } KJ{ mol }^{ -1 }\)
17.
(b)
p-block
18.
(a)
boiling point increases with increasing pressure
19.
(b)
transition elements
20.
(d)
1, 2 & 3
21.
(c)
Lavoisier
22.
(a)
CrO2Cl2
23.
(b)
4
24.
(c)
\({ { S }_{ 2 }{ O } }_{ 4 }^{ 2- }<{ SO }_{ 3 }^{ 2- }<{ S }_{ 2 }{ O }_{ 6 }^{ 2- }<{ SO }_{ 4 }^{ 2- }\)
25.
(d)
1s22s22p63s23p64s23d7
26.
(c)
redox
27.
(a)
3d-orbital
28.
(b)
-1
29.
(c)
oxidation
30.
(b)
For n = 1, the electron has a more negative energy than it does for n = 6 which means that the electron is more loosely bound in the smallest allowed orbit
31.
(c)
6.022\(\times\)1020
32.
(a)
40 ml CO2 gas
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
