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MCQ Practice

General Science (Everyday Science) MCQs

In a Fermi gas at absolute zero, particles occupy:

  • A. Random energy levels
  • B. Only highest energy level
  • C. All states up to Fermi energy
  • D. Only ground state
Explanation:
Fermions fill all states up to the Fermi level due to Pauli exclusion.

In a non-inertial rotating frame, the Coriolis force acting on a particle is proportional to:

  • A. Velocity squared
  • B. Angular velocity cross velocity
  • C. Mass only
  • D. Displacement
Explanation:
Coriolis force is given by (2m(\vec{\Omega} \times \vec{v})).

Which gas is used in photosynthesis?

  • A. O₂
  • B. CO₂
  • C. N₂
  • D. H₂
Explanation:
CO₂ is fixed into glucose.

Which energy source is renewable?

  • A. Coal
  • B. Oil
  • C. Solar
  • D. Gas
Explanation:
Solar energy is replenished naturally.

Which process forms mountains?

  • A. Erosion
  • B. Deposition
  • C. Plate collision
  • D. Weathering
Explanation:
Tectonic compression uplifts mountains.

Which instrument measures earthquakes?

  • A. Barometer
  • B. Thermometer
  • C. Seismograph
  • D. Hygrometer
Explanation:
Seismographs record seismic waves.

Which layer protects from UV rays?

  • A. Troposphere
  • B. Stratosphere
  • C. Mesosphere
  • D. Thermosphere
Explanation:
Ozone layer absorbs UV radiation.

Which ecosystem has least rainfall?

  • A. Forest
  • B. Desert
  • C. Grassland
  • D. Tundra
Explanation:
Deserts receive minimal precipitation.

Which process removes CO₂ in plants?

  • A. Respiration
  • B. Photosynthesis
  • C. Transpiration
  • D. Diffusion only
Explanation:
Plants fix CO₂ into glucose.

Which structure protects brain?

  • A. Heart
  • B. Skull
  • C. Liver
  • D. Lung
Explanation:
Skull encases brain.