Class 9 Chemistry · Chapter 7 · Test 5

Bases and Their Reactions

25 MCQs covering the properties of bases and alkalis their reactions with acids and ammonium salts soluble and insoluble bases and common applications of bases.

MCQs

25 questions · 17 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
What taste is commonly associated with bases?
- ASour
- BBitter
- CSweet
- DSalty
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Answer: B
Bases characteristically have a bitter taste.
Question 2
What is the usual feel of a basic solution?
- ARough
- BSlippery
- CSticky
- DDry
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Answer: B
Bases commonly have a slippery or soapy feel.
Question 3
What colour does red litmus turn in a basic solution?
- ABlue
- BGreen
- CYellow
- DRed
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Answer: A
Bases turn red litmus blue.
Question 4
Which of the following is an alkali?
- ACu(OH)2
- BNaOH
- CFe(OH)3
- DMgO
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Answer: B
An alkali is a base that is soluble in water and NaOH is a common example.
Question 5
What is an alkali?
- AA base soluble in water
- BAn acid soluble in water
- CA salt insoluble in water
- DA metal oxide only
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Answer: A
An alkali is a base that dissolves in water.

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