Sodium is made by the electrolysis of a molten mixture of about `40%` NaCl and `60%` CaCl_(2)` because

Sodium metal is made by the electrolysis of a molten mixture of about 40% NaCI and 67% CaCI_(2) in a

Consider the following metallurgical processes : (I) Electrolysis of molten mixiure of about 40% metal chloride and 60% calcium chloride (II) Heating the impure metal with l_2 at around 523 K to from metal iodide and their subsequent decomposition at higher temperature to yield pure metal (III) Heating the sulphide ore in the presence of air untill a part of it is converted to its oxide and the further heating the oxide in the absence of air with metal sulphide to produce metal The process used for obtaining titanium sodium and copper repsectively are

Sodium is perpared by the eletrclysis of molten NaCl but not by the electrolysis of its aqueous solution.

Suppose that 10% of men and 5% of women have grey hair. A grey haired person is selected at random. What is the probability that the selected person is male assuming that there are 60% males and 40% females