Fire extinguishers emit which gas?
1). Carbon monoxide
2). Chlorine
3). Carbon dioxide
4). Nitrogen
1. Which of the following is not a gaseous air pollutant?
3. The commonly used coolant in refrigerators is
5. Which one among the following is used in making gunpowder?
6. Haematite is an ore/mineral of
7. Question 7.2:Why is BiH3 the strongest reducing agent amongst all the hydrides ofGroup 15 elements?
8. Calcium salts used as fertilizer is:
9. The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :