Heisenberg Uncertainty Principle NEET Questions

Physical Chemistry - Atomic Structure

Heisenberg Uncertainty Principle MCQ Questions


1.
Which of the following is associated with Heisenberg’s uncertainty principle?
A.
Δx × Δp ≥ h/4π
B.
ΔE × Δt = h/2π
C.
Δx × Δp ≤ h/2π
D.
ΔE × Δp = h/4π
😑 View Answer Rough Work Error
ANSWER :
A. Δx × Δp ≥ h/4π
2.
Heisenberg’s uncertainty principle is applicable to
A.
Macroscopic particles
B.
Subatomic particles
C.
All particles
D.
Only electrons
😑 View Answer Rough Work Error
ANSWER :
B. Subatomic particles
3.
Which of the following expressions correctly represents the uncertainty principle?
A.
Δx × Δp = h/2π
B.
Δx × Δp ≥ h/4π
C.
Δx × ΔE = h/2π
D.
Δx × Δt ≥ h/4π
😑 View Answer Rough Work Error
ANSWER :
B. Δx × Δp ≥ h/4π
4.
Which of the following statements is true according to Heisenberg’s uncertainty principle?

NEET - 2016

A.
It is impossible to know the exact position and momentum of an electron simultaneously.
B.
An electron's position can be known exactly.
C.
An electron's momentum can be known exactly.
D.
Both position and momentum can be known accurately.
😑 View Answer Rough Work Error
ANSWER :
A. It is impossible to know the exact position and momentum of an electron simultaneously.
5.
Heisenberg’s uncertainty principle contradicts which classical concept?
A.
Newton's first law
B.
Bohr’s model
C.
Pauli’s exclusion principle
D.
Hund’s rule
😑 View Answer Rough Work Error
ANSWER :
B. Bohr’s model
6.
Which of the following pairs has the same dimensions?
A.
Δx × Δp and h
B.
Δx × Δp and ΔE × Δt
C.
ΔE × Δp and h
D.
ΔE × Δx and h
😑 View Answer Rough Work Error
ANSWER :
A. Δx × Δp and h