Q.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


Answer :

(d) between 30°C and 50°C

Because:Hot water loses the heat and simultaneously cold water gains heat this keeps the temperature in between 30°C and 50°C.

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