Question

STATE TRUE OR FALSE FOR THE FOLLOWING STATEMENTS:


1. Nitric acid turns red litmus to blue.


2. Sodium hydroxide turns blue litmus to red.


3. Sodium hydroxide and hydrochloric neutralise each other and form

salt and water.


4. Indicator is a substance which shows different colours in acidic

and basic solutions.


5. Tooth decay is caused by the presence of a base.


6. Organic acids are called edible acids.


7. Tartaric acid is present in lemon.


8. Formula of sodium hydroxide is NaoH.


9. Lichens are the indicators of pollution.


10. Acids contain H+ ions.​

Answer 1

1 t

2 t

3 t

4 t

5 f

6 t

7 f

8 t

9 t

10 t

Answer 2

Answer:

1. True

2. True

3. True

4. True

5. False

6. True

7. False

8. True

9. False

10. True

Explanation:

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