A solid weighs 32 g in the air and 28.8 g in water. The relative density of the solid is:

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Solution

The correct option is C 10
Relative density of solid = $\frac{w e i g h t o f s o l i d i n a i r}{(w e i g h t o f s o l i d i n a i r - w e i g h t o f s o l i d i n w a t e r)}$
= $\frac{32}{(32 - 28.8)}$
= $\frac{32}{3.2}$
= 10

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