What is the maximum Water Vapour content in the atmosphere
1). 2 to 3 per cent
2). 3 to 4 per cent
3). 4 to 5 per cent
4). 5 to 6 per cent
2. Sea water is saltier than rain water because
3. The luster of a metal is due to
4. The polymerisation of which of the following is used in manufacturing of polythene in industry ?
5. Which of the following imparts deep blue colour to glass
6. Which of the following processes is used for the production of Biodiesel?
7. Which among the following is false about acids?
8. Black lung disease occurs in people working in
9. The element used for making solar cells is
10. The gas used for artificial fruit ripening of green fruit is –