Selected MCQ

Current Question
Which gas is responsible for photochemical smog?
  • A. O₂
  • B. NO₂
  • C. CO₂
  • D. N₂
Correct Answer: B
Explanation:
Nitrogen dioxide forms smog.
Related Question 1
Which interaction is responsible for beta decay?
  • A. Strong
  • B. Weak
  • C. Electromagnetic
  • D. Gravitational
Correct Answer: B
Explanation:
Weak interaction governs beta decay.