Question

which of the substances is the lightest one
a)copper
b)mercury
c)lead
aluminium ​

Answer 1

Answer:

ALUMINIUM

Explanation:

Density determinesthe heaviness, or lightness of a given material. Among the four elements given above, Aluminium has the least density of 2.7 gms / cm3 , and hence Al is the lightest among the 4 metals : Al, Cu, Hg, and Pb.

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Answer 2

Aluminium is the lightest one in the given list of substances.

Density of mercury = $13600 \frac{Kg}{m^3}$

Density of lead = $11,342 \frac{Kg}{m^3}$

Density of copper = $8940\frac{Kg}{m^3}$

Density of aluminium = $2,710 \frac{Kg}{m^3}$

by above data we can know that aluminium has less density compared to other substances.

∴Option d) Aluminium has less weight i.e lightest.

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