Sea water can be purified by the process of
1). distillation
2). evaporation
3). filtration
4). fractional distillation
2. Chemical Formula of Water is _____ .
3. Ozone saves the biosphere by absorbing high energy radiations called ________ .
4. Natural rubber is the polymer of:
5. What is the mass percentage of carbon in carbon dioxide (CO2)?
6. Where does the oxygen that keeps us alive come from?
7. Which of the following constitutes highest percentage of Green House gases?
8. Which inetal does not undergo corrosion due to the formation of oxide layer?
9. Tar roads get damaged if there is
10. Question 11.2:Identify allylic alcohols in the above examples.