Class 9 Chemistry · Chapter 7 · Test 7

Acid Base Full Test

25 MCQs comprehensively covering acids and bases Arrhenius theory Brønsted-Lowry theory acid and base reactions neutralization salt formation acid properties base properties and acid rain.

MCQs

24 questions · 20 min · 24 marks

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Sample questions

The first 5 of 24. Try each one, then tap to see the answer.

Question 1
Which colour does blue litmus turn in an acidic solution?
- ABlue
- BRed
- CGreen
- DYellow
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Answer: B
Acids turn blue litmus red.
Question 2
Which colour does red litmus turn in a basic solution?
- ARed
- BYellow
- CGreen
- DBlue
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Answer: D
Bases turn red litmus blue.
Question 3
Which of the following is an Arrhenius acid?
- ANaOH
- BKOH
- CHCl
- DCaO
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Answer: C
HCl produces H+ ions in aqueous solution.
Question 4
Which of the following is an Arrhenius base?
- AHCl
- BHNO3
- CH2SO4
- DNaOH
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Answer: D
NaOH produces OH− ions in water.
Question 5
According to the Brønsted-Lowry concept what is an acid?
- AA proton acceptor
- BA proton donor
- CAn OH− donor
- DAn electron acceptor
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Answer: B
A Brønsted-Lowry acid donates a proton.

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