Is it true that the SI unit of density is $kilogram per metre cube (kg / m^{3})$ ?

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True

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answer is A.

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Detailed Solution

The above statement is True.
The SI unit of density is

kilogram per metre cube (kg / m^{3})

.
The density of the object is the ratio of mass of the object and volume. It is given as,

density = \frac{mass of the substance}{volume of the substance}

The density of a substance under specified conditions remains constant. So density can be used to determine its purity.
If the density of a substance is greater than the density of water, then the substance sinks into the water. And if the density is less than the water, it floats on water.

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