Class 9 Chemistry · Chapter 7 · Test 1

Acids and Bases

25 MCQs covering basic concepts of acids and bases including their properties, common examples, natural and mineral acids, bases, alkalis, litmus changes, and neutralization.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

Question 1
Which characteristic taste is commonly associated with acids?
- ASweet
- BSour
- CBitter
- DSalty
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Answer: B
Acids commonly have a sour taste.
Question 2
What colour does blue litmus paper turn in an acidic solution?
- AGreen
- BYellow
- CRed
- DBlue
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Answer: C
Acids change blue litmus paper to red.
Question 3
What colour does red litmus paper turn in a basic solution?
- ABlue
- BRed
- CYellow
- DOrange
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Answer: A
Bases change red litmus paper to blue.
Question 4
Which of the following is a common mineral acid?
- AAcetic acid
- BHydrochloric acid
- CTartaric acid
- DCitric acid
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Answer: B
Hydrochloric acid is a common mineral acid.
Question 5
Which acid is commonly found in vinegar?
- ACitric acid
- BAcetic acid
- CTartaric acid
- DFormic acid
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Answer: B
Vinegar contains acetic acid.

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