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: 27/04/2019
Public one mark questions Quantum Mechanical Model of Atom - III
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 of the following statements is correct for an electron that has the quantum numbers n = 4 and in = -2.
The electron may be in 2p orbital
The electron may be in 4d orbital
The electron is in the second main shell
The electron must have spin quantum number as \(+\frac{1}{2}\)
2.
The maximum number of electrons in a sub-shell is given by the equation________.
n2
2n2
2l- 1
2l+1
3.
The outermost electronic configuration of manganese (at. no. = 25) is___.
3d5 4s2
3d6 4s1
3d7 4so
3d6 4s2
4.
The orbital with n = 3 and l = 2 is____.
3s
3p
3d
3j
5.
de Broglie equation is______.
\(\lambda=\frac{h}{mv}\)
\(\lambda=\frac{hv}{m}\)
\(\lambda=\frac{mv}{h}\)
\(\lambda=hmv\)
6.
The idea of stationary orbits was first given by_________.
Rutherford
J.J. Thomson
Niels Bohr
Max Planck
7.
In a sodium atom (atomic number = 11 and mass number = 23) and the number of neutrons is___________.
equal to the number of protons
less than the number of protons
greater than the number of protons
none of these
8.
Which of the following is the actual configuration of Cr (Z = 24)?
1s2 2s2 2p6 3s2 3p6 3d4 4s2
1s2 2s2 2p6 3s2 3p6 3d5 4s1
1s2 2s2 2p6 3s2 3p6 3d6
1s2 2s2 2p6 3s2 3p6 3d5 4s3
9.
What are the values of n, I, m and s for 3px electron?
3,2,1,0
3,1,-1,+1/2
3,2,+1,-1/2
3,0,0,+1/2
10.
Which of the following provides the experimental justification of magnetic quantum number?
Zeeman effect
Stark effect
Uncertainty principle
Quantum condition
11.
What is the formula used to calculate the angular momentum?
\(\sqrt{l(l+1)}{h\over 2\pi}\)
\(mvr\over 2\pi\)
\(mvr\over 2\)
m.\(\triangle v\)
12.
Which one of the quantum number is used to calculate the angular momentum of an atom?
n
m
l
s
13.
When l = 0, the number of electrons that can be accommodated in the subshell is_______________
0
2
6
8
14.
The maximum number of electrons that can be accommodated in f orbital is _________
10
14
16
6
15.
The maximum number of electrons that can be accommodated in N shell is_____________
8
18
32
36
16.
Match the list-I and list-II correctly using the code given below the list.
| List-I | List-II |
|---|---|
| A. Principal quantum number | 1.represents the directional orientation of orbital |
| B. Azimuthal quantum number | 2.represents the spin of the electron |
| C. Magnetic quantum number | 3.represents the main shell |
| D. Spin quantum number | 4.represents the sub shell |
| A | B | C | D |
| 3 | 4 | 1 | 2 |
| A | B | C | D |
| 4 | 2 | 3 | 1 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
| A | B | C | D |
| 1 | 3 | 2 | 4 |
17.
Which one of the following is the time independent Schrodinger wave equation?
\(\triangle x.\triangle p\ge {h\over 4\pi}\)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}=0\)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}(E-V)\psi=0\)
\(\hat{H}\psi-E\psi=-{8\pi^2m\over h^2}\)
18.
The crystal used in Davison and Germer experiment is__________
nickel
zinc sulphide
gold foil
NaCI
19.
de Broglie equation is_________
E = \(h \ \gamma\)
E = mc2
\(\gamma ={E_2-E_1 \over h}\)
\(\lambda ={h\over mv}\)
20.
Who proposed the dual nature of light to all forms of matter?
John Dalton
Neils Bohr
Albert Einstein
J. J. Thomson
21.
The formula used to calculate the Bohr's radius is__________
\(r_n={(-13.6)Z^2\over n^2}eV \ atom^{-1}\)
\(r_n={(0.529)n^2\over z}A\)
\(r_n={(-1312.8)Z^2\over n^2}kJ \ mol^{-1}\)
\(r_n={(+1312.8)n^2\over Z^2}kJ \ mol^{-1}\)
22.
The Bohr's radius of Li2+ of 2nd orbit is ________________
0.529 \(\mathring{A}\)
0.0753\(\mathring{A}\)
0.7053\(\mathring{A}\)
0.0529\(\mathring{A}\)
23.
Assertion: Helium has the highest value of ionization energy among all the elements known
Reason: Helium has the highest value of electron affinity among all the elements known.
Codes:
(a) Both assertion and reason are true and reason is correct explanation for the assertion.
(b) Both assertion and reason are true but the reason is not the correct explanation for the assertion
(c) Assertion is true and the reason is false
(d) Both assertion and the reason are false
Both assertion and reason are true and reason is correct explanation for the assertion.
Both assertion and reason are true but the reason is not the correct explanation for the assertion
Assertion is true and the reason is false
Both assertion and the reason are false
24.
Assertion (A): Copper (Z = 29) with electronic configuration [Ar] 4s1 3d10 is more stable than [Ar] 4s2 3d9.
Reason (R): Copper with [Ar] 4s1 3d10 is more stable due to symmetrical distribution and exchange energies of d electrons.
Codes:
(a) A and R are correct and R is the correct explanation of A.
(b) A and R are correct but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
A and R are correct and R is the correct explanation of A.
A and R are correct but R is not the correct explanation of A.
A is correct but R is wrong.
A is wrong but R is correct.
25.
Assertion(A): Cr with electronic configuration [Ar] 3d5 4s1 is more stable than [Ar] 3d4 4s2.
Reason(R): Half filled orbitals have been found to have extra stability than partially filled orbitals.
Codes:
(a) A and R are correct and R is the correct explanation of A.
(b) A and R are correct but R is not the correct explanation of A.
(c) A is correct but R is wrong.
(d) A is wrong but R is correct.
A and R are correct but R is not the correct the explanation of A.
A is correct but R is wrong.
A is wrong but R is correct.
A is wrong but R is correct.
1.
(b)
The electron may be in 4d orbital
2.
(d)
2l+1
3.
(a)
3d5 4s2
4.
(c)
3d
5.
(a)
\(\lambda=\frac{h}{mv}\)
6.
(c)
Niels Bohr
7.
(c)
greater than the number of protons
8.
(b)
1s2 2s2 2p6 3s2 3p6 3d5 4s1
9.
(b)
3,1,-1,+1/2
10.
(a)
Zeeman effect
11.
(a)
\(\sqrt{l(l+1)}{h\over 2\pi}\)
12.
(c)
l
13.
(b)
2
14.
(b)
14
15.
(c)
32
16.
(a)
| A | B | C | D |
| 3 | 4 | 1 | 2 |
17.
(c)
\({\partial^2\psi\over \partial x^2}+{\partial^2\psi\over \partial y^2}+{\partial^2\psi\over \partial z^2}+{8\pi^2m\over h^2}(E-V)\psi=0\)
18.
(a)
nickel
19.
(d)
\(\lambda ={h\over mv}\)
20.
(c)
Albert Einstein
21.
(b)
\(r_n={(0.529)n^2\over z}A\)
22.
(c)
0.7053\(\mathring{A}\)
23.
(c) Assertion is true and the reason is false
24.
(a) A and R are correct and R is the correct explanation of A
25.
(a) A and R are correct and R is 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
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Maths
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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
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