Science and technology question papers 2

Page 10

Sodium bicarbonate is used in fire extinguishers. Baking powder is used in preparation of cakes and breads in bakery industry. The dilution of a concentrated acid should always be done by adding concentrated acid to water and not by adding water to acid.

Acids are stored in containers made of glass or ceramic.

SHORT NOTES

Indicators (with proper examples) pH scale with proper examples Water of crystallisation (with proper examples)

ANSWER THE FOLLOWING How do metal carbonates reacts with acids? Explain detail about Hydronium ion


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