Lactometer is used to check whether _______ is adulterated or not.
A
oil
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B
milk
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C
sugar
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D
dal
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Solution
The correct option is B
milk
A lactometer is a little glass instrument that tests the purity of milk based on density or buoyancy and works on the principle of gravity. Adulteration of milk can be checked by using a lactometer. If the milk sample is pure, then the lactometer floats on it and if it is adulterated or impure, then the lactometer sinks.