Atomic Structure (NEET Chemistry): Questions 21 - 25 of 73

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Question number: 21

» Atomic Structure » De-Broglie's Relationship

MCQ▾

Question

Calculate momentum of radiations of wavelength 0.33 nm.

Choices

Choice (4) Response

a.

2.01×1024 Kg m sec-1

b.

2.01×1022 Kg m sec-1

c.

4.01×1024 Kg m sec-1

d.

2.01×1018 Kg m sec-1

Question number: 22

» Atomic Structure » Bohr Model of Hydrogen Atom

MCQ▾

Question

One of the postulate Bohr’s atomic model is

Choices

Choice (4) Response

a.

The electron can move in only those circular orbits where the angular momentum is a whole number multiply of h/2 π

b.

Uncertainty in measurement is not due to lack of any experimental technique but due to nature of subatomic particle itself

c.

The emission and absorption of energy does not take place continuously but in the form of quantum.

d.

None of the above

Question number: 23

» Atomic Structure » Quantum Mechanical Model of Atom

MCQ▾

Question

The minimum energy required overcoming the attracted forces between electron and surface of Ag metal is 7.52 x 10-19 J. What will be the maximum K. E. of electron ejected out from Ag which is being exposed to U. V. light of λ = 360 Å

Choices

Choice (4) Response

a.

67.68 x 10-19 Joule

b.

6.96 x 10-19 Joule

c.

57.68 x 10-19 Joule

d.

36.38 x 10-19 Joule

Question number: 24

» Atomic Structure » Thomson and Rutherford Atomic Models

MCQ▾

Question

Rutherford’s experiment on scattering of alpha particles shows that atom has-

Choices

Choice (4) Response

a.

Neutrons

b.

Nucleus

c.

Proton

d.

Electron

Question number: 25

» Atomic Structure » De-Broglie's Relationship

MCQ▾

Question

Calculate the wavelength of a moving electron having 4.55 x 10-25 J of kinetic energy -

Choices

Choice (4) Response

a.

6.27 x 1 07 meter

b.

7.27 x 1 07 meter

c.

12.27 x1 07 meter

d.

6.27 x 1 07 meter

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