Amongst baking soda,caustic soda,and washing soda,the carbonate anion is present in ... .

The most soluble bicarbonate is

The blue colour of the solution (metal dissolved in liquid ammonia) is due to

Which of the following is not an ore of magnesium?

State the reasons for the following:
$(a)$ Why is a solution of $Na_{2}CO_{3}$ alkaline?
$(b)$ Why are alkali metals prepared by the electrolysis of their fused chlorides?
$(c)$ Why is sodium found to be more useful than potassium in biological systems?

The process of industrial manufacturing of sodium carbonate is known as