Home › CBSE Class 10 › Chemistry › Acids, Bases and Salts › Washing soda is sodium carbonate decahydrate, fo…
Washing soda is sodium carbonate decahydrate, formula:
ANa₂CO₃·10H₂O
BNa₂SO₄·10H₂O
CNa₂CO₃
DNaHCO₃
Answer & Solution
Correct answer: A. Na₂CO₃·10H₂O
1. Washing soda is hydrated sodium carbonate, Na₂CO₃·10H₂O.
2. Made by recrystallising sodium carbonate from water.
3. Used in glass-making, paper, detergent industries; also to remove permanent hardness from water.
_Source: NCERT Class 10 Science Ch 2 §2.4.3 Washing Soda_
Related questions
Tooth enamel is made of:pH of the stomach (gastric juice) is approximately:An acid that is also a strong dehydrating agent and is used in car batteries is:Plaster of Paris (POP) has the formula:The salt formed from NaOH + HCl is:When a carbonate reacts with an acid, the gas evolved is:When an acid reacts with a metal, the gas usually evolved is:Baking soda (sodium hydrogen carbonate) has the formula: