Multiple choice general knowledge

What is heavier, 1kg of iron block or 1 kg of cotton?

  1. iron

  2. cotton

  3. lol, both are equal

  4. Insufficient data
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a classic trick question. By definition, 1 kilogram is 1 kilogram regardless of material. Both the iron block and cotton have the same mass (1 kg), so they are equal. The iron might have less volume, but mass is identical.

Keep practicing — related questions