Question

Write the effect of chemical reaction?​

Answer 1

Answer:

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change

Explanation:

$hope \: this \: help \: u \:$

Answer 2

Answer:

1. In industries some chemical substances are used to alter the speed of a chemical reaction. These substances are called catalysts.

2. For example, metallic iron is used as a catalyst in the manufacture of ammonia using Haber’s process.

3. This ammonia is the basic material for the production of urea, an important fertilizer in agriculture.

4. In Vanaspati ghee (dalda) preparation finely divided nickel is used as a catalyst.

5. Thus, speed of the certain reactions is influenced by the catalysts and such reactions are called catalytic reactions.

6. Enzymes and yeasts are called biocatalysts.