Sodium Carbonate is commonly called ________?

A. Plaster of Paris
B. Washing Soda
C. Common Salt
D. None of these

Explanation:

Sodium carbonate, Na₂CO₃·10H₂O, (also known as washing soda, soda ash and soda crystals) is the inorganic compound with the formula Na₂CO₃ and its various hydrates.