Read Carefully. Place your name and address on the first sheet of the test. Use a light grade of paper and write on one side of the sheet only. Do not copy answers from the lesson paper. Use your own words, so that your instructor may know that you understand the subject. Read the lesson paper a number of times before attempting to answer the questions.

1. Name all the substances you can think of which are not soluble in water and are soluble in naphtha or benzine.

2. Does sugar neutralize acid chemically? Why?

3. How is soap made? What is the difference between hard and soft soap?

4. What is "hard" water? How does it act with soap? How is it softened?

5. Explain how "bluing" may make white clothes yellow.

6. Why remove stains when fresh? Why before washing?

7. Why is there danger in using naphtha, benzine, and to some extent alcohol near a light ?

8. How do cotton and woolen differ in the effect of acids and alkalies upon them?

9. What precautions must be taken in bleaching or removing stains with chloride of lime solution or with Javelle water?

10. Give a good method of starching and ironing clothes.

11. If possible, try to remove some stain by a method given in this lesson and tell of the results.

12. Describe a good method of washing woolens.

13. Why does the drying of a little acid or alkali on a fabric have a very disastrous effect?

14. What is your method of washing dishes ?

15. What can you say of acids, alkalies, salts?

16. What is "washing soda?" How should it be used ? When should it not be used ?

17. Why does strong soap or washing soda harm varnish or paint?

18. What is the cause of tarnish on metals? How can it be removed and prevented ?

19. What advantages has ammonia for use in the laundry ?

20. Do you understand everything given in this .lesson paper ? Are there any questions you would like to have answered?

Note. - After completing the test sign your full name.