Isodiaphers among the following options is :

1.  C614 and N1123 

2.  M1224g  and C1123 

3.  H24e  and O816 

4.  C612  and N715  

Subtopic:  Introduction of Atomic Structure | Number of Electron, Proton & Neutron |
 53%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The incorrect statement regarding the characteristics of X-rays is :

1. The radiation can ionize the gas

2. It causes a fluorescence effect on ZnS

3. It is deflected by electric and magnetic fields

4. Have a shorter wavelength than ultraviolet rays

Subtopic:  Introduction of Atomic Structure |
 53%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The correct expression derived for the energy of an electron in the nth energy level is for H-atom

1.  En=2π2 me4 K2n2 h2

2.  En=-π2 me4 K22n2 h2

3.  En=-2π2 me2 K2n2 h2

4.  En=-2π2 me4 K2n2 h2

Subtopic:  Bohr's Theory |
 59%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

For any H-like system, the ratio of velocities of I, II & III orbit i.e., V1 : V2 : V3 will be:

1.  1 : 2 : 3

2.  1 : 1/2 : 1/3

3.  3 : 2 : 1

4.  1 : 1 : 1

Subtopic:  Bohr's Theory |
 72%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Select the incorrect graph for velocity of e- in an orbit vs. Z, 1n and n:

1.  

2.  

3.  

4.  

Subtopic:  Bohr's Theory |
 64%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Number of waves produced by an electron in one complete revolution in nth orbit is:

1.  n

2.  n2

3.  n+1

4.  2n+1

Subtopic:  Bohr's Theory |
 52%
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The energy of an electron moving in nth Bohr's orbit of an element is given by En=-13.6n2Z2 eV/atom (Z=atomic number). The graph of E vs. Z2 (keeping "n" constant) will be:

1.  

2.  

3.  

4.  

Subtopic:  Bohr's Theory |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The spectrum produced from an element is:

1.  atomic spectrum

2.  line spectrum

3.  absorption spectrum

4.  any one of the above

Subtopic:  Type of Spectra |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following expressions represents the spectrum of Balmer series (If n is the principal quantum number of higher energy level) in Hydrogen atom?

1.  v¯=Rn-1 n+1n2 cm-1

2.  v¯=Rn-2 n+24n2 cm-1

3.  v¯=Rn-2 n+2n2 cm-1

4.  v¯=Rn-1 n+14n2 cm-1

Subtopic:  Hydrogen Spectra |
 68%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The H-spectrum show:

1.  Heisenberg's uncertainty principle

2.  Diffraction

3.  Polarization

4.  Presence of quantized energy level

Subtopic:  Bohr's Theory |
 75%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh