(b) Blue litmus (d) Turmeric indicator Short answer type questions (1) : 1. What are indicators? Name two acid-base indicators. 2. Which of the following acids are weak? (a) Formic acid (b) Nitric acid, 3. You are given a solution of a base. What is the effect of it on the following: (a) Red litmus (c) China rose indicator 4. What will happen : (a) when a drop of hydrochloric acid is added to blue litmus? (b) when a drop of dilute sulphuric acid is added to china rose indicator? 5. An acidic substance is mixed with an equivalent amount of a basic substance, (a) What is the reaction called? 6. What is pH? OTS (b) What product is formed?
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Answer:Answer:
Acids
Bases
1. Its taste is sour.
Its taste is bitter.
2. It turns blue litmus paper to red.
It turns red litmus paper to blue.
3. It contains hydrogen ion (H+).
It contains hydroxyl ion(OH-)
4. It doesn’t feel soapy to touch.
It feels soapy to touch.
5. Examples: Curd, lemon juice and
Vinegar.
Examples: Baking soda, Soap and lime
water.
Explanation:
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