CHEMISTRY

3. they are some kind of granular substances which helps in scraping away bacteria and plaque from our teeth.
4. the formation of a mixture involves only this type of change.
7. water fit for drinking is known as
8. thought to be a magical portion,bringing wealth, health and immortality.
9. Products obtained from petroleum using chemical processes is called
11. main component in Talcum powder other than talc
13. Latin name for potassium
14. latin word for paper
15. it is a solid which is dissolved in a solvent

1. an english engineer who invented the eraser in 1770
2. elements which have some properties of metal and some of non-metal is called
5. paper is obtained from which fibres of plants?
6. which element is present in the fire crackers so that they give us a dazzling flame when we burst it.
10. this metal starts with letter 'C' and ends with 'T' and is present in the iron pillar of Qutub Minar
12. scientist who is also known as the father of modern chemistry.