Test 1 | Science | Class 10th | Ch. 1 Chemical Reaction

Test 1 

Class 10th  

Ch. 1 Chemical Reaction

1. What is change? What are main times of the changes? Explain with examples.

2. How can you say that a change took place?

3. What do you mean by chemical reaction ? What are main types of the chemical reaction on the basis of the state of the reactant and product?

4. What do you mean by exothermic  and endothermic reaction, explain with examples?

5. What do you mean by chemical reactions? What are main types of the chemical reaction, explain with definitions and example each of them?

6. What do you mean by electrolytes ? Explain the strong, weak and non electrolytes with definitions and example?

7. What is corrosion? How can we check it? Is it useful or harmful? Why did the colour of copper and silver changes?

8. What do you mean by rancidity ?How can we check it? What are antioxidants and where they are used?

9. What are the representation of the chemical equation? What are main types of the chemical equations? 

10. What do you mean by the balancing of equation ? what information a good chemical equation conveys us? What are main symbols used in the chemical equation?