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Q.

A glass flask is filled up to a mark with 50 cc of mercury at 18ºC. If the flask and contents are heated to 38ºC, how much mercury will be above the mark ? ( for glass is 9 × 10–6/ºC and coefficient of real expansion of mercury is  180 × 10–6/ºC)

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a

0.85 cc

b

0.46 cc

c

0.153 cc

d

0.05 cc

answer is C.

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Detailed Solution

Due to volume expansion of both mercury and flask, the change in volume of mercury relative to flask is given by
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A glass flask is filled up to a mark with 50 cc of mercury at 18ºC. If the flask and contents are heated to 38ºC, how much mercury will be above the mark ? ( for glass is 9 × 10–6/ºC and coefficient of real expansion of mercury is  180 × 10–6/ºC)