Question

5. Name the catalyst used to decompose potassium chlorate.
6. Reaction is fastest in gaseous state. Explain.
7. Give completely equation for formation of ammonia.
8. Define chemical reaction.
9. Give four reasons to prove that burning of paper is an exa
10. Give a balanced reaction for photosynthesis in plants.
11. Differentiate between physical and chemical changes
12. Explain the concept of catalyst and promoter.
WITH APPROPF​

Answer 1

Explanation:

5.manganese dioxide

6.Gaseous particles have highest kinetic energy in them. Due to this high energy content the number of collisions between them are also high and thus they make up a fast reaction.

7.N2+3H→2NH3

8.it repeatedly arranges the constituent atoms of the reactants which create different substances such as products.

10.6CO2 + 6H2O — > C6H12O6 + 6O2.

11.Physical changes only change the appearance of a substance but not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.