5. Describe the process of 6. Mark T if the statement is true and T'if it is false, (a) Nitric acid turns red litmus blue. (T/F) (b) Sodium hydroxide turns blue litmus red. (T/F) (c) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (T/F) (d) Indicator is a substance which shows different colours in acidic and basic solution. (T/F) (e) Tooth decay is caused by presence of a base. (T/F) Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one neutral drink. How will Dorji decide which drink is to be served to whom?
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This period became known as the Golden Age of India because it was marked by extensive inventions and discoveries in science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, and philosophy.
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