Which pair correctly matches the chemical name and common name?
Answer and explanation
Correct answer: Sodium hydrogen carbonate and baking soda
Sodium hydrogen carbonate, NaHCO3, is the chemical name of baking soda, so option A is correctly matched. Plaster of Paris is calcium sulphate hemihydrate, not calcium carbonate; washing soda is sodium carbonate decahydrate, not calcium sulphate hemihydrate; and bleaching powder is mainly calcium oxychloride rather than sodium chloride. Thus only the first pair is correct.
Frequently asked questions
What is the correct answer to this question?
Sodium hydrogen carbonate and baking soda
Why is this the correct answer?
Sodium hydrogen carbonate, NaHCO3, is the chemical name of baking soda, so option A is correctly matched. Plaster of Paris is calcium sulphate hemihydrate, not calcium carbonate; washing soda is sodium carbonate decahydrate, not calcium sulphate hemihydrate; and bleaching powder is mainly calcium oxychloride rather than sodium chloride. Thus only the first pair is correct.
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.
