Match the quantum numbers with the information provided by them:

Quantum number Information provided
A. Principal quantum number 1. Orientation of the orbital
B. Azimuthal quantum number 2. Energy and size of orbital
C. Magnetic quantum number 3. Spin of electron
D. Spin quantum number 4. Shape of the orbital

Codes
 
A B C D
1. 2 4 1 3
2. 1 2 3 4
3. 1 4 3 2
4. 4 1 3 2

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 90%
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Match the ensuing rules with the corresponding statements:

Rules Statements
A. Hund’s Rule 1. No two electrons in an atom can have the same set of four quantum numbers.
B. Aufbau Principle 2. Half-filled and completely filled orbitals have extra stability.
C. Pauli's Exclusion Principle 3. Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied.
D. Heisenberg’s Uncertainty Principle 4. It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously.
5. In the ground state of atoms, orbitals are filled in the order of their increasing energies.
 
A B C D
1. 3 5 1 2
2. 1 2 3 4
3. 3 5 1 4
4. 4 5 3 2
Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
 83%
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Match the following:

Column I Column II
A. X-rays 1. v=100-104 Hz
B. Ultraviolet wave (UV) 2. v=1010 Hz
C. Long radio waves 3. v=1016 Hz
D. Microwave 4. v=1018 Hz
 
A B C D
1. 4 1 3 2
2. 1 4 2 3
3. 1 4 3 2
4. 4 3 1 2
Subtopic:  Electromagnetic Radiation |
 75%
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Assertion (A): All isotopes of a given element show the same type of chemical behaviour.
Reason (R): The chemical properties of an atom are controlled by the number of electrons in the atom.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Number of Electron, Proton & Neutron |
 64%
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Assertion (A): A black body is an ideal body that emits and absorbs radiation of all frequencies.
Reason (R): The frequency of radiation emitted by a body goes from lower frequency to a higher frequency with an increase in temperature.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

Subtopic:  Planck's Theory |
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Assertion (A): It is impossible to determine the exact position and exact momentum of an electron simultaneously.
Reason (R): The path of an electron in an atom is clearly defined. 

1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Heisenberg Uncertainty Principle |
 72%
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The total number of electrons present in one mole of methane is:

1. 6.023 × 1023
2. 6.023 × 1024
3. 6.023 × 1022
4. 1.619× 1023

Subtopic:  Number of Electron, Proton & Neutron |
 60%
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The total number and mass of neutrons in 7 mg of 14C would be :

(Assume that mass of a neutron = 1.675 × 10–27 kg)

\(1 .\) \(2 . 41\) \(\times\) \(\left(10\right)^{21}\) \(,\) \(4 . 03\) \(\times\) \(\left(10\right)^{– 6}\) \(kg\)
\(2 .\) \(6 . 23\) \(\times\) \(\left(10\right)^{23}\) \(,\) \(1 . 67\) \(\times\) \(\left(10\right)^{- 21} kg\)
\(3 .\) \(1 . 22\) \(\times\) \(\left(10\right)^{22}\) \(,\) \(4 . 03\) \(\times\) \(\left(10\right)^{6}\) \(kg\)
\(4 .  2 . 41\) \(\times\) \(\left(10\right)^{21}\) \(,\) \(4 . 03\) \(\times\) \(\left(10\right)^{- 6}\) \(g\)

Subtopic:  Number of Electron, Proton & Neutron |
 58%
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The wave number of a light whose time period is 2.0 × 10–10 s would be:

1. 16.66 m-1

2. 1.66 m-1

3. 32.34 m-1

4. 12.34 m-1

Subtopic:  Introduction of Atomic Structure |
 68%
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The number of photons of light with a wavelength of 4000 pm that provide 1J of energy would be: 

1. 2.01 × 1016
2. 2.01 × 1019
3. 4.14 × 1023
4. 2.14 × 1021

Subtopic:  Planck's Theory |
 68%
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