# 8. One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be(a) 80°C(b) more than 50°C but less than 80°C(c) 20°C(d) between 30°C and 50°C

R

If one litre of water at  is mixed with one litre of water at . Then, the temperature of the mixture will be

(d) between  and

Because as the volume of both the liquids with temperature   and   is equal. Therefore, when we add both the liquids there is transferred of heat take place from a liquid with high temperature to a liquid with a low temperature. That's why temperature is between  and

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