11th Standard Syllabus & Materials
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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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Published on: 10/11/2020
11th Standard Chemistry English Medium Free Online Test 1 Mark Questions 2020 - Part Three
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.
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1.
2.
The treatment of ethyl formate with excess of RMgX gives ____________
\(R-\underset { \overset { || }{ O } }{ C } -R\)
\(R-\underset { \overset { | }{ OH } }{ CH } \quad R\)
R- CHO
R- O- R
3.
Which of the following can be used as the halide component for friedal - crafts reaction?
Chloro benzene
Bromo benzene
chloro ethene
isopropyl chloride
4.
Cis – 2 – butene and trans – 2 – butene are __________
conformational isomers
structural isomers
configurational isomers
optical isomers
5.
The IUPAC name of 
is ____________
2 – Bromo -3 – methyl butanoic acid
2 - methyl - 3- bromobutanoic acid
3 - Bromo - 2 - methylbutanoic acid
3 - Bromo - 2, 3 - dimethyl propanoic acid
6.
The molar mass of Na2SO4 is ___________.
129
142
110
70
7.
How many molecules of hydrogen is required to produce 4 moles of ammonia?
15 moles
20 moles
6 moles
4 moles
8.
The orbital with n = 3 and l = 2 is____.
3s
3p
3d
3j
9.
Which one of the quantum number is used to calculate the angular momentum of an atom?
n
m
l
s
10.
Which one of the following is the time independent Schrodinger wave equation?
\(\triangle x.\triangle p\ge {h\over 4\pi}\)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}=0\)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}(E-V)\psi=0\)
\(\hat{H}\psi-E\psi=-{8\pi^2m\over h^2}\)
11.
The energy of an electron of hydrogen atom in 2nd main shell is equal to_________
-13.6 eV atom-1
-6.8 eV atom-1
-0.34 eV atom-1
-3.4 eV atom-1
12.
The number of unpaired electrons in carbon atom in the gaseous state is___________.
0
1
2
3
13.
Consider the following statements.
(i) The region where the probability density of electron is zero, called nodal surface.
(ii) The probability of finding the electron is independent of the direction of the nucleus.
(iii) The number of radial nodes is equal to n + 1+ 1
Which of the above statements is/are correct?
(i) and (iii)
(i) and (ii)
(iii) only
(i) and (iii)
14.
Change in Gibbs free energy is given by ___________
\(\Delta\)G=\(\Delta\)H + T\(\Delta\)S
\(\Delta\)G=\(\Delta\)H - T\(\Delta\)S
\(\Delta\)G=\(\Delta\)H \(\times\) T\(\Delta\)S
None of these
15.
Which of the following does not result in an increase in the entropy?
crystallisation of sucrose from solution
rusting of iron
conversion of ice to water
Vapourisation of camphor
16.
Which is true about cyclic process?
ΔU=0; ΔH=0
ΔU>0; ΔH<0
ΔH=0; ΔU<0
ΔU=0; ΔH<0
17.
Match the list I with list II and select the correct answer using the code given below the list.
| List I | List II | ||
| A | Unnilbium/td> | 1 | Bohrium |
| B | Unnilhexium | 2 | Roentgenium |
| C | Ununnunium | 3 | Seaborgium |
| D | Unnilseptium | 4 | Nobelium |
| A | B | C | D |
| 1 | 2 | 4 | 3 |
| A | B | C | D |
| 3 | 1 | 4 | 2 |
| A | B | C | D |
| 4 | 3 | 2 | 1 |
| A | B | C | D |
| 4 | 3 | 1 | 2 |
18.
The metal which is a liquid at room temperature is _______
Gallium
Mercury
Germanium
Tellurium
19.
Find the incorrect statement.
Smallest atom of periodic table is He
p-block elements are metals, nonmetals and metalloids
Noble gases have 8 valence electrons except He
Valence electron and valency is same for group I
20.
The elements at the extreme left of periodic table has strong behaviour ______
Oxidizing
Reducing
both oxidisation and reducing
electro negative
21.
The element with atomic number 57 belongs to _____
s-block
p-block
d-block
f-block
22.
What would be the formula of the compound formed by A and B, where A has the valence 3 and B has the valence 3?
AB
AB3
A3B
3AB3
23.
The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion ie \(\alpha =\frac { 1 }{ V } { \left( \frac { \partial V }{ \partial T } \right) }_{ P }\) For an ideal gas a is equal to ___________
T
1/T
P
none of these
24.
Shape of an orbital is given by ____________
Principal quantum number
Spin quantum number
Azimuthal quantum number
Magnetic quantum number
25.
Assertion (A): Angular momentum of an electron in an atom is quantized
Reason (R): In an atom only those orbits are permitted in which angular momentum of the electron is natural number multiple of \(\frac { h }{ 2\pi } \)
Codes:
(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.
(c)
2.
(b)
\(R-\underset { \overset { | }{ OH } }{ CH } \quad R\)
3.
(d)
isopropyl chloride
4.
(c)
configurational isomers
5.
(c)
3 - Bromo - 2 - methylbutanoic acid
6.
(b)
142
7.
(c)
6 moles
8.
(c)
3d
9.
(c)
l
10.
(c)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}(E-V)\psi=0\)
11.
(d)
-3.4 eV atom-1
12.
(c)
2
13.
(b)
(i) and (ii)
14.
(a)
\(\Delta\)G=\(\Delta\)H + T\(\Delta\)S
15.
(a)
crystallisation of sucrose from solution
16.
(a)
ΔU=0; ΔH=0
17.
(c)
| A | B | C | D |
| 4 | 3 | 2 | 1 |
18.
(b)
Mercury
19.
(a)
Smallest atom of periodic table is He
20.
(b)
Reducing
21.
(c)
d-block
22.
(a)
AB
23.
(b)
1/T
24.
(c)
Azimuthal quantum number
25.
(a) Both A and R are true and R is the correct explanation of A
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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