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Test: Quantum Mechanical Model of Atom (May 1) - NEET MCQ


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10 Questions MCQ Test Daily Test for NEET Preparation - Test: Quantum Mechanical Model of Atom (May 1)

Test: Quantum Mechanical Model of Atom (May 1) for NEET 2024 is part of Daily Test for NEET Preparation preparation. The Test: Quantum Mechanical Model of Atom (May 1) questions and answers have been prepared according to the NEET exam syllabus.The Test: Quantum Mechanical Model of Atom (May 1) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Quantum Mechanical Model of Atom (May 1) below.
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Test: Quantum Mechanical Model of Atom (May 1) - Question 1

Direction (Q. Nos. 1-12) This section contains 12 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. 

Radial wave functio ns (R) of different orbitals are plotted. Which is/are correct graphs?

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 1

For 1s-orbital radial wave function (Ft) is maximum at r - 0, and falls rapidly as r increases thus, (a) correct.
For2s-orbital, radial wave function (R) is maximum at (r = 0), falls to zero and further decreases with r. There appears radial nodes. Thus (b) correct.
For2p-orbital, radial wave function is zero at r = 0, reaches maximum value (at r = a0) and then falls thus (c) is correct.

Test: Quantum Mechanical Model of Atom (May 1) - Question 2

For an electron in 2p-orbital, radial probability function 4πr2R2 as a function of r is given by

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 2

(a) Describes radial wave function as a function of r for 1s
(b) Describes radial probability function as a function of r for 2s
(c) Describes radial wave function as a function r for 2s
(d) Describes radial probability function as a function of r for 2p

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Test: Quantum Mechanical Model of Atom (May 1) - Question 3

Select the correct statement(s).

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 3

 Thus, is d e pendent on r true


(b) and | | are dependent on r, θ and  : true
(c) Angular wave function is determined by /land m, and not by n: true

Test: Quantum Mechanical Model of Atom (May 1) - Question 4

Which orbital gives an electron, a greater probability being found close to the nucleus?

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 4

3s is spherically symmetrical and its electron density is maximum at the nucleus. It decreases with r.

Test: Quantum Mechanical Model of Atom (May 1) - Question 5

Angular nodes in 4s- suborbit is equal to radial nodes in

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 5

Angular nodes in 4s = 0

Test: Quantum Mechanical Model of Atom (May 1) - Question 6

at any point is proportional to

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 6

Radial probability density = 4πr2 of find in g the electron within the volume of a very thin spherical shell at a distance r from nucleus.

Test: Quantum Mechanical Model of Atom (May 1) - Question 7

There is formation of in all five nodes (including terminal nodes) in a string of 12 cm. Thus, wavelength of the waves formed is 

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 7

For n nodes in a string

Test: Quantum Mechanical Model of Atom (May 1) - Question 8

The Schrodinger wave equation for H-atom is 

where, a0 is Bohr’s radius. If radial node in 2s is at distance r0, then

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 8



*Multiple options can be correct
Test: Quantum Mechanical Model of Atom (May 1) - Question 9

Direction (Q. Nos. 13-15) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or  MORE THANT ONE  is correct.

Q.  Which of the following properties can be described by wave function ?

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 9

The wave function describ es properties of the orbital and the electron that occupies the orbital
(a) Type of orbital is described : true
(b) Energy of electron : true
(c) Shape of the orbital: true
(d) Probability: true

*Multiple options can be correct
Test: Quantum Mechanical Model of Atom (May 1) - Question 10

Radial probability density in the occupied orbital of a hydrogen atom in the ground state (1s) is given below

Detailed Solution for Test: Quantum Mechanical Model of Atom (May 1) - Question 10

Radial probability increases as r increase reaches a maximum value when r = a0 (Bohr’s radius) and then falls. When radial probability is very small.
Thus, (a) and (c) are true.

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