One liter of water at 30∘C is mixed with one liter of water at50∘C. The temperature of the mixture will be

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Increase

Average of the two

Normal

Decrease

answer is D.

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Detailed Solution

When we mix 1 liter of water whose temperature is 30 °C with 1 liter of water having a temperature of 50 °C, then the temperature of the whole water will be around 40 degrees, which will be an average number between 50 and 30. Because the volume of both the waters is equal, then the temperature of 50-degree Celcius water will decrease and the temperature of 30-degree Celcius will increase.

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