A beaker is filled up to brim with water at $4^{o} C$ . At one time the temperature is increased by a few degrees about $4^{o} C$ and at another time it is decreased by a few degrees below $4^{o} C$ . One shall observe that

Water overflows in both the cases

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The level remains constant in each case

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In the previous case water overflows while in the latter case it level comes down

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Water overflows in the latter case, while comes down in the previous case

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Solution

The correct option is A Water overflows in both the cases
The density of water is maximum at $4^{o} C$ , above and below $4^{o} C$ , its density decreases i.e. volume increases.
Therefore, when temperature is increased or decreased from $4^{o} C$ , volume of water increases and water overflows in both cases.

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A beaker is filled up to brim with water at 4oC. At one time the temperature is increased by a few degrees about 4oC and at another time it is decreased by a few degrees below 4oC. One shall observe that

The correct option is A Water overflows in both the casesThe density of water is maximum at 4oC, above and below 4oC, its density decreases i.e. volume increases. Therefore, when temperature is increased or decreased from 4oC, volume of water increases and water overflows in both cases.

A beaker is filled up to brim with water at $4^{o} C$ . At one time the temperature is increased by a few degrees about $4^{o} C$ and at another time it is decreased by a few degrees below $4^{o} C$ . One shall observe that