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Q. No.The relation between \(n_m \) (\(n_m \) = number of permissible values of magnetic quantum number (ml) for a given value of azimuthal
quantum number (l) is:
1. \(n_m = l+2\)
2. \(l = {n_m -1 \over 2}\)
3. \(l= 2n_m +1\)
4. \(n_m = 2l^2 + 1
\)
Subtopic: Shell & Subshell |
67%
From NCERT
NEET - 2023
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Incorrect set of quantum numbers from the following is :
1. n=4,l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=-1/2
2. n=5, l=2, m1 =-2, -1, +1, +2, ms=+1/2
3. n=4, l=2, m1 = -2, -1, 0, +1, +2, ms=-1/2
4. n=5,l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=+1/2
1. n=4,l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=-1/2
2. n=5, l=2, m1 =-2, -1, +1, +2, ms=+1/2
3. n=4, l=2, m1 = -2, -1, 0, +1, +2, ms=-1/2
4. n=5,l=3, m1 =-3, -2, -1, 0, +1, +2, +3, ms=+1/2
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
81%
From NCERT
NEET - 2023
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Given below are two statements:
In light of the above statements, choose the correct answer from the options given below:
1. Statement I is true but Statement II is false.
2. Statement I is false but Statement II is true.
3. Both Statement I and Statement II are true.
4. Both Statement I and Statement II are false.
| I: | The value of wave function, \(\Psi\) depends upon the coordinates of the electron in the atom |
| II: | The probability of finding an electron at a point within an atom is proportional to the orbital wave function |
In light of the above statements, choose the correct answer from the options given below:
1. Statement I is true but Statement II is false.
2. Statement I is false but Statement II is true.
3. Both Statement I and Statement II are true.
4. Both Statement I and Statement II are false.
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
From NCERT
NEET - 2023
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The first four electron energy levels of an atom are shown below, given in terms of electron volts. Which of the following gives the energy of a photon that could NOT be emitted by this atom?
E4 = −18 eV
E3 = −32 eV
E2 = −72 eV
E1 = −288 eV
1. 14 eV
2. 40 eV
3. 44 eV
4. 54 eV
E4 = −18 eV
E3 = −32 eV
E2 = −72 eV
E1 = −288 eV
1. 14 eV
2. 40 eV
3. 44 eV
4. 54 eV
Subtopic: Photo Electric Effect |
55%
From NCERT
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Match List I with List II
Choose the correct answer from the options given below:
1. I-B; II-A; III-C; IV-D
2. I-A; II-C; III-D; IV-B
3. I-D; II-B; III-A; IV-C
4. I-B; II-C; III-D; IV-A
| List I | List II |
| Different regions of the spectrum | Frequencies |
| I. Radiofrequency | A. 106 Hz |
| II. Microwave | B. 1013 Hz |
| III. Ultraviolet Region | C. 1010 Hz |
| IV. Infra-red Region | D. 1016 Hz |
Choose the correct answer from the options given below:
1. I-B; II-A; III-C; IV-D
2. I-A; II-C; III-D; IV-B
3. I-D; II-B; III-A; IV-C
4. I-B; II-C; III-D; IV-A
Subtopic: Electromagnetic Radiation |
68%
From NCERT
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When electromagnetic radiation of wavelength 300 nm falls on the surface of a metal, electrons are emitted with the kinetic energy of 1.68 × 105 J mol–1. The minimum energy needed to remove one mole of electron from the metal is:
(h = 6.626 × 10–34 Js, c = 3 × 108 ms–1, NA = 6.022 × 1023 mol–1)
1. 2.31 × 106 J mol–1
2. 3.84 × 104 J mol–1
3. 3.84 × 10–19 J mol–1
4. 2.31 × 105 J mol–1
(h = 6.626 × 10–34 Js, c = 3 × 108 ms–1, NA = 6.022 × 1023 mol–1)
1. 2.31 × 106 J mol–1
2. 3.84 × 104 J mol–1
3. 3.84 × 10–19 J mol–1
4. 2.31 × 105 J mol–1
Subtopic: Photo Electric Effect |
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I (quantum number) |
List-II (Orbital) |
| (A) n = 2, \(\ell\) = 1 | (I) 2s |
| (B) n = 3, \(\ell\) = 2 | (II) 3s |
| (C) n = 3, \(\ell\) = 0 | (III) 2p |
| (D) n = 2, \(\ell\) = 0 | (IV) 3d |
Choose the correct answer from the options given below:
| (A) | (B) | (C) | (D) | |
| 1. | (III) | (IV) | (I) | (II) |
| 2. | (IV) | (III) | (I) | (II) |
| 3. | (IV) | (III) | (II) | (I) |
| 4. | (III) | (IV) | (II) | (I) |
Subtopic: Shell & Subshell |
82%
From NCERT
NEET - 2022
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A monochromatic infrared range finder of power 1milli watt emits photons with wavelength 1000 nm in 0.1 second. The number of photons emitted in 0.1 second is:
(Given: h = \(6.626 \times 10^{-34} J~s\) , c = \(3 \times 10^8 m~s^{-1}, \) Avogadro number = \(6.022 \times 10^{23}\))
1. \(30 \times 10^{37}\)
2. \(5 \times 10^{14} \)
3. \(30 \times 10^{34} \)
4. \(5 \times 10^{11} \)
Subtopic: Electromagnetic Radiation |
72%
From NCERT
NEET - 2022
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Which one of the following electrons in the ground state will have least amount of energy?
| 1. | An electron in hydrogen atom. |
| 2. | An electron in 2p orbital of carbon atom. |
| 3. | The electron of copper atom present in 4s orbital. |
| 4. | The outermost electron in sodium atom. |
Subtopic: AUFBAU Principle |
66%
From NCERT
NEET - 2022
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If radius of second Bohr orbit of the \(He^+\) ion is 105.8 pm, what is the radius of third Bohr orbit of \(Li^{2+}\) ion?
| 1. | 158.7 Å | 2. | 158.7 pm |
| 3. | 15.87 pm | 4. | 1.587 pm |
Subtopic: Hydrogen Spectra |
76%
From NCERT
NEET - 2022
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