Selected MCQ

Current Question
Which phenomenon demonstrates light’s wave nature most directly?
  • A. Photoelectric effect
  • B. Compton scattering
  • C. Diffraction
  • D. Pair production
Correct Answer: C
Explanation:
Diffraction is a characteristic wave interference effect.
Related Question 1
Which phenomenon confirms wave nature of electrons?
  • A. Photoelectric effect
  • B. Electron diffraction
  • C. Compton effect
  • D. Pair production
Correct Answer: B
Explanation:
Electron diffraction demonstrates wave behavior.
Related Question 2
Which phenomenon demonstrates quantization of angular momentum?
  • A. Diffraction
  • B. Zeeman effect
  • C. Photoelectric effect
  • D. Reflection
Correct Answer: B
Explanation:
Zeeman splitting arises from quantized angular momentum states.
Related Question 3
Which phenomenon bends light?
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Interference
Correct Answer: B
Explanation:
Refraction changes direction in medium.
Related Question 4
Which process most directly forms soil horizons over long timescales?
  • A. Instantaneous melting
  • B. Weathering combined with organic accumulation and leaching
  • C. Oceanic spreading
  • D. Lunar tidal forcing
Correct Answer: B
Explanation:
Soil profiles develop from parent material alteration plus biological and hydrologic processes.
Related Question 5
Which level of protein structure is most directly stabilized by hydrogen bonds between backbone groups?
  • A. Primary
  • B. Secondary
  • C. Tertiary only
  • D. Quaternary only
Correct Answer: B
Explanation:
(\alpha)-helices and (\beta)-sheets arise from backbone hydrogen bonding patterns.