Science-Set-10

3. Man-made gas that has created holes in the ozone layer
6. Are sprayed to protect crops from insects like locusts
7. Name of insects that can spoil plant and requires spray of insecticides
8. A type of soil where cotton grows well
10. Water that is fit for drinking is known as ______.
13. animal dung used for fertilizing land
16. The pure water that is widely used in car batteries, injections, medicines etc.
18. A step or process to water crops at regular interval
19. Name of the plant that grows well in sandy soil
20. Are sprayed to protect crops from pests like rats

1. A chemical that is added to kill germs present in water.
2. A step in agriculture to loosen the soil
3. The section which is kept cool (in distillation) by cold water circulating around it.
4. Tablets of this chemical kill the germs present in water.
5. A method of removing soluble impurities where the water is lost as watervapour
9. planting (seed) by scattering it on or in the earth
11. plant that requires moist
12. An example of pest that requires spray of pesticides
14. A method that makes the water potable.
15. A method of removing soluble impurities to obtain both the water and impurities separately
17. The method of killing germs in water without adding any substance into water