1. Burning of paper is the best example of _____ change. 2. _____ is the branch of science which deals with the study of particles around us.

Question

Fill up the blanks: 

1. Burning of paper is the best example of _____ change. 

2. _____ is the branch of science which deals with the study of particles around us. 

3. Salt is a combination of the chemicals _____ and _____. 

4. We could prepare soft idly as a result of a chemical change named _____ takes place in the idly batter.

5. We are using _____ to remove strong stains on the clothes. 

6. _____ help plant grow and restore soil fertility. 

7. _____ is the organic tertillzer. 

8. _____ invented Portland cement. 

9. _____ is the medicine for skin problems. 

10. Calcium sulphate hemihydrate is called as _____ 

11. _____ is used in mouthwash in low concentrations. 

12. The adhesive used in puncture shop is _____

Answer 1

1. Chemical 

2. Chemistry 

3. Sodium, Chlorine 

4. fermentation

5. Wash powder

6. Organic fertilizers 

7. Compost 

8. Joseph Aspdin 

9. Epsom 

10. Plaster of parisl 

11. Pheno 

12. Artificial adhesivel