Question

which is heavier
1 kg Cotton
or
1 kg Mango​

Answer 1

the cotton as it will have a larger surface area per unit of apparent weight due to the lower density. So every 1 kg apparent weight is somewhere near 1.1 kg actual weight of cotton.

Answer 2

Both are of the same weight.

This is because the question is not mentioning the volume covered by both the substances, the question is stating that both are of equal weight i.e 1 kg each

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