Across
- 6. A commonly used insecticide.
- 8. Joseph Priestly is credited with the discovery of this element.
- 9. Common ______ acts as a preservative in pickles.
- 10. This ancient practice has contributed to the development of modern chemistry.
- 11. The branch of science that deals with the study of composition of substances and how they react with each other.
- 12. The type of chemicals commonly used to kill pests in crops.
Down
- 1. A very common type of fertiliser.
- 2. Chemicals which provide essential nutrients to crops and increase their yield.
- 3. Petrol, diesel, kerosene are examples of ________ products.
- 4. The chemicals which help to cure and prevent diseases.
- 5. A group of chemicals secreted in our body to control various activities.
- 7. Chemicals that protect crops from harmful fungi.