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Density

Three liquids...

Question

Three liquids of densities $d, 2 d$ and $3 d$ are mixed in equal volumes. Then the density of the mixture is

A

d

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B

2 d

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C

3 d

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D

5 d

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Solution

The correct option is B $2 d$
$P m i x t u r e = \frac{m_{1} + m_{2} + m_{3}}{3 V} = \frac{V (d + 2 d + 3 d)}{3 V} = 2 d$

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