🏠 Home
← Back Start Quiz
MCQ Practice

General Science (Everyday Science) MCQs

Which principle states that identical fermions cannot occupy the same quantum state?

  • A. Heisenberg principle
  • B. Pauli exclusion principle
  • C. Hund’s rule
  • D. Aufbau principle
Explanation:
Fermions obey antisymmetric wavefunctions prohibiting identical states.

The Compton effect demonstrates:

  • A. Wave nature of electrons
  • B. Particle nature of light
  • C. Gravitational redshift
  • D. Thermal radiation only
Explanation:
Photon scattering shows momentum transfer like particles.

Which gauge boson mediates the strong nuclear force?

  • A. Photon
  • B. Gluon
  • C. W boson
  • D. Z boson
Explanation:
Gluons carry the strong interaction between quarks.

A particle in a one-dimensional infinite potential well has energy proportional to:

  • A. (n)
  • B. (n^2)
  • C. (1/n)
  • D. (\ln n)
Explanation:
Energy levels scale as (n^2) in a particle-in-a-box model.

In quantum mechanics, eigenvalues of an operator correspond to:

  • A. Allowed measurement outcomes
  • B. Wave amplitudes
  • C. Probabilities directly
  • D. Coordinates only
Explanation:
Observables yield eigenvalues upon measurement.

The partition function in statistical mechanics encodes:

  • A. Only energy levels
  • B. All thermodynamic information
  • C. Only entropy
  • D. Only pressure
Explanation:
Thermodynamic quantities can be derived from the partition function.

Which condition leads to total internal reflection?

  • A. Light moving from lower to higher refractive index
  • B. Incident angle less than critical angle
  • C. Light moving from higher to lower refractive index with angle exceeding critical angle
  • D. Any angle in vacuum
Explanation:
Total internal reflection occurs beyond the critical angle in denser to rarer medium.

A system obeying Bose-Einstein statistics consists of particles that are:

  • A. Distinguishable
  • B. Fermions with half-integer spin
  • C. Bosons with integer spin
  • D. Classical particles only
Explanation:
Bosons have integer spin and can occupy the same quantum state.

The Lagrangian of a system is defined as:

  • A. (T + V)
  • B. (T - V)
  • C. (V - T)
  • D. (TV)
Explanation:
The Lagrangian equals kinetic energy minus potential energy.

In general relativity, gravity is best described as:

  • A. A force acting at a distance
  • B. Curvature of spacetime caused by mass-energy
  • C. Exchange of virtual photons
  • D. A fictitious force only
Explanation:
Einstein’s theory models gravity as spacetime curvature influencing geodesic motion.