Multiple choice general knowledge science & technology

Smog refers to:

  1. A simple mix of gases

  2. Smoke plus fog

  3. Smelly old goop

  4. Sodium,Methanea and Oxygen gas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Smog is a portmanteau word formed from 'smoke' and 'fog'. It refers to a type of air pollution typically caused by exhaust emissions from vehicles and industrial smoke mixing with fog. Option C is just a playful backronym, and option D is a nonsensical chemical formula.

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