Across
- 1. was the year in which PET was formed
- 3. is the main component of Talcum powder .
- 7. Dalton proposed the atomic theory
- 8. is the non toxic mineral that the core of the pencil
- 9. is an Antibiotic medicine
- 11. periodic table has been updated to include 92 naturally occurring elements and 26 synthesized elements.
- 12. are substances that contain sulphates of compound fertilizers help to increase the production of food.
Down
- 2. the year in which the eraser was created
- 4. Laurent Lavoisier identified and named Oxygen in 1778
- 5. acid is used in cheese as a preservative
- 6. created the periodic table
- 10. was the first fiber created ?
- 11. is neither loss nor created