Question 1 : The shape of an orbital is governed by?
1. Principle quantum number
2. Spin quantum number
3. Azimuthal quantum number
4. Magnetic quantum number
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Question 2 : Quantum number value of 2p orbitals are?
1. n = 1, L = 0
2. n = 2, L = 1
3. n = 1, L = 1
4. n = 2, L = 0
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Question 3 : The orbits having same energy are called?
1. Degenerated orbitals
2. Valence orbitals
3. P-Orbita1s.
4. Hybrid orbitals
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Question 4 : When the azimuthal quantum number (L) is 3, than m can have?
1. 3 values
2. 7 values
3. 1 value
4. 5 values
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Question 5 : The value of Bohr radius for first orbit of H-atom is?
1. 0.529 X 10^-8 cm
2. 0.529 X 10^-12 cm
3. 0.529 x 10^-10 cm
4. 0.529 X 10^-6 cm
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Question 6 : Balmer series lie in the ____ region of spectrum:
1. Infar-infrared
2. Visible
3. Infrared
4. Ultraviolet
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Question 7 : The radius of second Bohr orbit is?
1. 0.053 nm
2. 0.53/4 nm
3. 0.529 X 2 nm
4. 0.53 X 20 nm
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Question 8 : According to Bohr's Model, the radius of the second orbit is:
1. 2.1 A°
2. 2.11 X 10^-11m
3. 2A°
4. 2.11 X 10^-12 m
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Question 9 : When the electrons is brought from infinity to the ground state of the hydrogen atom, then the energy is?
1. Emitted
2. Depends on surrounding
3. Not effected
4. Absorbed
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Question 10 : The size of the shell Is determined by ____ quantum number.
1. Spin quantum number.
2. Azimuthal quantum number
3. Magnetic quantum number
4. Principle quantum number
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