The chemical name of caustic soda is
a. sodium hydroxide
b. ammonium hydroxide
c. potassium hydroxide
d. magnesium hydroxide

Which of the following compounds is manufactured by using the chemical effect of electric current ?
(a) ammonium hydroxide
(b) sodium carbonate
(c) magnesium hydroxide
(d) sodium hydroxide

One of the following is a medicine for indigestion. That is:

(a) sodium hydroxide

(b) manganese hydroxide

(c) magnesium hydroxide

(d) potassium hydroxide