Atomic Structure (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Chemistry): Questions 23 - 26 of 30

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Question number: 23

» Atomic Structure » Quantum Mechanical Model of Atom

MCQ▾

Question

Which of the following set of quantum numbers are permitted?

Choices

Choice (4) Response

a.

n = 3, = 2, m =-2, s =+1/2

b.

n = 2, =2, m =+l, s = -1/2

c.

n = 3, ℓ = 2, m =-l, s = 0

d.

n = 2, = 3, m =+l, s =- 1/2

Question number: 24

» Atomic Structure » Nature of Electromagnetic Radiation

Assertion-Reason▾

Assertion (Ꭺ)

Splitting of the spectral lines in the presence of magnetic field known as stark effect.

Reason (Ꭱ)

Line spectrum is simplest for hydrogen atom.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 25

» Atomic Structure » De-Broglie's Relationship

Appeared in Year: 2014

MCQ▾

Question

If the Planck’s constant h = Js, the de-Broglie wavelength of a particle having momentum of kg. m. s-1 will be -

Choices

Choice (4) Response

a.

0.2 Å

b.

0.02 Å

c.

0.002 Å

d.

2 Å

Question number: 26

» Atomic Structure » Shapes of S, P and D - Orbitals

MCQ▾

Question

Choose the correct statements -

(1) Designation for the orbital with the quantum number n = 3, ℓ = 1, m =-1 may be 3px or 3py

(2) Designation for the orbital with the quantum number n = 4, = 2, m =+2 may be 4dxy or 4d x2 – y2

(3) Designation for me orbital with the quantum number n = 5, = 0, m = 0 may be 5s

(4) Designation for the orbital with the quantum number n = 2, = 1, m = 0 may be 3pz

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

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