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Q.

Is it true that when the test tube placed in pure milk sinks to a certain mark and then when some water is mixed with milk, the test tube will sink more?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True
When water is added, the density of milk decreases, so the weight of the milk-water mixture displaced by the immersed part of the test tube also decreases and becomes less than the weight of a loaded tube. So, the tube sinks more and will float only when the weight of this milk-water mixture displaced by the tube is equal to the weight of the loaded tube.
 
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Is it true that when the test tube placed in pure milk sinks to a certain mark and then when some water is mixed with milk, the test tube will sink more?