Question

Imp and extra que of chemical reaction and equation
Class 10th
Cbse​

Answer 1

Explanation:

1.“We need to balance a skeltal chemical equation.” Give reason to justify the statement.

2.Giving an example list two information which make a chemical equation more useful (informative).

3. Name the reducing agent in the following reaction:

3MnO2 + 4Al———— > 3Mn + 2Al2O3

State which is more reactive, Mn or A1 and why?

4.(i) Write a balanced chemical equation for process of photosynthesis.

(ii)When do desert plants take up carbon dioxide and perform photosynthesis?

5.A Name the type of chemical reaction represented by the following equation:

6Write the chemical equation of the reaction in which the following changes have taken place with an example of each:

(i) Change in colour

(ii) Change in temperature

(iii) Formation of precipitate

hope it helps you