The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disapp-ears.The behaviour is a characteristic of substance forming
50 mL of 10 N H2SO4. 25mL of 12 N Hcl and 40 mL of 5N HNO3are mixed and the volume of the mixture is made 100 mL by adding water. The normality of resulting will be