Dense soda ash used in the manufacture of glass, is chemically represented by
A
Na<sub>2</sub>CO<sub>3</sub>
B
Na<sub>2</sub>CO<sub>3</sub>.10H<sub>2</sub>O
C
Na<sub>2</sub>CO<sub>3</sub>.H<sub>2</sub>O
D
Na<sub>2</sub>HCO<sub>3</sub>
Correct Answer: Na<sub>2</sub>CO<sub>3</sub>.H<sub>2</sub>O