Which of the following gases is known as "Laughing Gas"?
1). Nitrous oxide
2). Nitrogen peroxide
3). Nitrogen
4). Nitric oxide
1. Question 14.3:Carbon monoxide gas is more dangerous than carbon dioxide gas. Why?
2. "Firefighting clothes" are made from
3. The most important ore of aluminium is
4. The purest form of water is
5. The acid used in lead storage cells is
6. In upper layer of atmosphere ozone is formed
7. Petroleum consists of a mixture of
8. Two elements which can form a large number of compounds are
10. The reactions in which oxidation and reduction occur simultaneously are called _______.