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Question: An adulterated sample of milk has a density \(1032 \mathrm {~kg} \mathrm {~m} ^ { - 3 }\) while pure...

An adulterated sample of milk has a density 1032 kg m31032 \mathrm {~kg} \mathrm {~m} ^ { - 3 } while pure milk has a density of 1080 kg m31080 \mathrm {~kg} \mathrm {~m} ^ { - 3 } Then the volume of pure milk in a sample of 10 litres of adulterated milk is

A

1 litre

B

2 litre

C

3 litre

D

4 litre

Answer

4 litre

Explanation

Solution

Mass of adulterated milk

Or (1\left( \because 1 \right. litre =103 m3)\left. = 10 ^ { - 3 } \mathrm {~m} ^ { 3 } \right)

Mass of pure milk

\therefore Mass of water added

103×10 ^ { 3 } \times (Volume of water added) =

Or

Or