Question

कैरेक्टरिस्टिक ऑफ केमिकल रिएक्शन​

Answer 1

Answer:

change in colour

change in temperature.

change in state .

evolution of gas.

change in odar.

Answer 2

Characteristics of Chemical reaction.

1)Evolution of gas. Some chemical reactions are characterised by the evolution of gas. For Ex :1)Reaction between zinc and dilute sulphuric acid ...

2)Reaction between sodium carbonate and dilute hydrochloric acid to form carbon dioxide gas.

2)Formation of precipitate. Some chemical reactions are characterised by the formation of precipitate. For Ex :1)Reaction between Potassium iodide ...

2)Reaction between sulphuric acid and barium chloride to form white precipitate of barium sulphate.

3)Change in colour. Some chemical reactions are characterised by change in colour. For Ex :1)When citric acid reacts with potassium permanganate ...