Multiple choice Why does 1 kg of iron occupy less space as compared to 1 kg sponge? Iron has less density than sponge. Iron has more density than sponge. Iron is hard but sponge is soft. Iron has magnetic property but sponge has not. Iron has lustre but sponge has not. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Yes, the density of the iron is more than sponge, due to this 1 kg iron occupies less space but sponge occupies more space.