Test Paper : CBSE Class X  Self Evaluation Tests For Science : Acids, Bases and Salts

1. Write the chemical formula and chemical name of washing soda.

2. A baker found that the cake prepared by him is hard and small in size? Which ingredient he has forgotten to add that would have caused the cake to rise and become light. Explain your answer.

3. When copper sulphate crystals are heated, a white powder is formed. Explain giving chemical equation.

4. Arrange the following in ascending order of pH:
Vinegar, Blood, Saliva, Washing soda

5. The pH values of four solutions A, B, C and D are 0, 11, 5, 8.
Which of them has highest hydrogen ion concentration? 

6. Explain the manufacture of washing soda with the help of a neat and labelled diagram.

7. Write the following reactions:
(i) Preparation of bleaching powder
(ii) Reaction between NaOH and Zn
(iii) Reaction between Potassium hydroxide and sulphuric acid.

8. With the help of a reaction, explain the manufacture of plaster of paris.
What happens, if heating is not controlled during formation of plaster of paris?

9. Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction, if one of them compounds formed is calcium chloride.

10. What is universal indicator? What is the difference between universal indicator and olfactory indicator?
Give examples of various types of indicators used to distinguish between acids and bases.