Ice at -20°C is added to 50 g of water at 40°C. When the temperature of the mixture reaches 0°C, it is found that 20 g of ice is still unmelted. The amount of ice added to the water was close to(Take, specific heat of water = 4.2 J/g/°C, Specific heat of ice = 2.1 J/g/°C and Heat of fusion of water at 0°C = 344 J/g)

Ice at -20°C is added to 50 g of water at 40°C. When the temperature

1.	Ice at -20°C is added to 50 g of water at 40°C. When the temperature of the mixture reaches 0°C, it is found that 20 g of ice is still unmelted. The amount of ice added to the water was close to(Take, specific heat of water = 4.2 J/g/°C, Specific heat of ice = 2.1 J/g/°C and Heat of fusion of water at 0°C = 344 J/g)
A.	40 g
B.	50 g
C.	60 g
D.	100 g
Answer» B. 50 g