Multiple choice

What is washing soda?

  1. Sodium chloride

  2. Hydrated sodium carbonate

  3. Sodium bicarbonate

  4. Calcium carbonate

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Washing soda is the common name for sodium carbonate decahydrate (Na2CO3.10H2O). Sodium bicarbonate is baking soda, and sodium chloride is common salt.