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

One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be between 30°C and 50°C. This is because there is transferred of heat from an object with high temperature to an object having a low temperature. So, heat will flow from one litre of water at 50°C to one litre of water at 30°C. So, the temperature of the mixture will be between 30°C and 50°C.

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