Question

Calcium carbonate is used as
(i) a filler in cosmetics
(ii) a constituent of chewing gum
an antacid
mild abrasive in toothpaste
A. (i),(ii),(iii),(iv)
B. (i),(ii), (iii)
C. (i),(iii)
D. (i),(iv)

Answer 1

Correct Answer - A
`CO_(3)^(2-)` ion nullifies `H^(+)` ions. Thus, it is used as an antacid.
`CO_(3)^(2-)+2H^(+)hArrH_(2)CO_(3)`