A litre of water at 30 degree Celsius is mixed with a litre of water at 50 degree Celsius. The temperature of the mixture will be degree Celsius.

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between 30 and 50

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Solution

The correct option is C between 30 and 50
We know that heat flows from a hot body to a cold body. When a litre of water at 30 degree Celsius is mixed with a litre of water at 50 degree Celsius, heat flows from the hotter one to the colder one until both attains the same temperature.
And therefore, the temperature of the mixture will be in between 30 degree Celsius to 50 degree Celsius.

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