Selected MCQ

Current Question
The Coriolis effect arises because Earth:
  • A. Is spherical
  • B. Rotates
  • C. Has an atmosphere
  • D. Has oceans
Correct Answer: B
Explanation:
Rotation causes apparent deflection of moving air and water in a rotating frame.
Related Question 1
The common-ion effect suppresses the ionization of a weak acid because it:
  • A. Increases (K_a)
  • B. Shifts equilibrium toward undissociated acid
  • C. Eliminates water autoionization
  • D. Makes the acid strong
Correct Answer: B
Explanation:
Added common ion drives dissociation equilibrium to the left.
Related Question 2
The Berry phase arises due to:
  • A. Dissipation
  • B. Cyclic adiabatic evolution
  • C. Thermal fluctuations
  • D. Measurement collapse
Correct Answer: B
Explanation:
Geometric phase accumulates during cyclic parameter evolution.
Related Question 3
Which boundary causes earthquakes?
  • A. Divergent
  • B. Convergent
  • C. Transform
  • D. All
Correct Answer: D
Explanation:
All plate boundaries can generate earthquakes.
Related Question 4
Which conservation law arises from rotational symmetry?
  • A. Energy
  • B. Linear momentum
  • C. Angular momentum
  • D. Charge
Correct Answer: C
Explanation:
Noether’s theorem links rotational symmetry to angular momentum conservation.
Related Question 5
The wavefunction of a particle must be continuous because:
  • A. It represents force
  • B. Its square gives probability density
  • C. It represents velocity
  • D. It defines temperature
Correct Answer: B
Explanation:
Discontinuity would imply undefined probability.