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Milk of magnesia and slaked lime are examples of neutral substances.

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Important Questions on Acids, Bases and Salts

MEDIUM
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q (III)
Acid rain is caused by the excess of carbon dioxide in air.
MEDIUM
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q (III)
Potassium hydroxide turns blue litmus red.
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7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q (III)
Most of the fruits contain organic acids.
EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q 1
Name three organic and three inorganic acids.
MEDIUM
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q 2
What are indicators? Name any three indicators and state the colour change which takes place in (i) acids and (ii) bases.
EASY
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q 3
What are neutral substances? Give examples of two neutral substances.
MEDIUM
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q 4
You are given three unlabelled bottles A, B and C containing colourless solutions, such that one of them is acid, the other being basic and neutral. How will you distinguish between them by using china rose as an indicator?
HARD
7th Jammu and Kashmir Board
IMPORTANT
SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 5 - Acids, Bases and Salts>EXERCISES>Q 5
What do you understand by the term neutralisation? Describe an activity in which neutralisation of hydrochloric acid takes place with sodium hydroxide, using phenolphthalein as an indicator.