Basic Science for Class 7
Chapter 2: Acids, Bases and Salts
Very-short-answer oral questions
1. How does an acid taste? How does a base taste?
2. A solution turns a red litmus paper blue. Is it acidic or basicp
3. Name a spice that can act as an acid-base indicator.
4. Name three mineral acids.
5. What is the neutral point or end point?
6. Which gas is evolved when you add some lemon juice to baking soda?
Reason for yourself
Answers
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Answer:
Acid tastes sour.
Base tastes soapy or slippery or bitter.
Basic
Turmeric
Nitic acid, sulfuric acid, phosphoric acid.
When base and acid are exactly in right proportions according to the reaction equation.
Carbon dioxide
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