Which listed acid is not normally used as a food acid?
- Formic acid
- Tartaric acid
- Ascorbic acid
- Citric acid
Answer / جواب
Formic acid
Class 9 Chemistry Chapter 7 MCQs — Acid Base Chemistry
Class 9 Chemistry · Chapter 7 · Retained syllabus for Annual 2027
Practise this chapter online, check each answer and review your result. The current bank contains 8 objective questions for this chapter and medium.
Sample practice questions
Which gas helps dough rise when a suitable baking mixture reacts?
- Carbon dioxide
- Oxygen
- Nitrogen
- Carbon monoxide
Answer / جواب
Carbon dioxide
What happens when a suitable reactive metal reacts with a dilute acid?
- Metal dissolves, salt forms and hydrogen evolves
- Only water forms
- Only oxygen evolves
- The metal becomes a noble gas
Answer / جواب
Metal dissolves, salt forms and hydrogen evolves
How many hydroxide ions are released per formula unit of Ca(OH)₂ on dissociation?
- 2
- 1
- 0
- 3
Answer / جواب
2
Printable practice
Use custom mode for a chapter paper. Board Annual mode uses the complete prescribed syllabus and published question distribution for supported subjects.