Highest percentage of carbon is found in which form of coal?
1). Anthracite
2). Bituminous
3). Peat
4). lignite
1. Glass is a
2. Spirit in contact with body gives cool sensation because it is :
3. Red data book contains data of which of the following?
4. Which one of the following elements is used in the manufacture of fertilizers?
5. Bleaching powder is used in drinking water as a an
6. The laws of electrolysis are given by
7. Which of the following is used as filler in tyre of rubber
8. Which of the following green house gases has the greatest heat-trapping ability?