Which names correctly identify baking soda and washing soda, respectively?
Answer and explanation
Correct answer: Sodium hydrogen carbonate and sodium carbonate decahydrate
Baking soda is sodium hydrogen carbonate, NaHCO₃, whereas washing soda is sodium carbonate decahydrate, Na₂CO₃·10H₂O. The different names reflect different compositions, formulas, and uses: baking soda is used in baking and as a mild antacid, while washing soda is used for cleaning and softening hard water. Thus option A is correct. The other pairs name unrelated salts or acids and do not identify these two substances.
Frequently asked questions
What is the correct answer to this question?
Sodium hydrogen carbonate and sodium carbonate decahydrate
Why is this the correct answer?
Baking soda is sodium hydrogen carbonate, NaHCO₃, whereas washing soda is sodium carbonate decahydrate, Na₂CO₃·10H₂O. The different names reflect different compositions, formulas, and uses: baking soda is used in baking and as a mild antacid, while washing soda is used for cleaning and softening hard water. Thus option A is correct. The other pairs name unrelated salts or acids and do not identify these two substances.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
