Cement is made hard with
1). dehydration
2). hydration and dissociation of water
3). Dissociation of water
4). Polymerisation
5. Which one of the following metals does not react with water to produce Hydrogen
6. Question 5.6:What do you understand by activation of adsorbent? How is it achieved?
7. The Bhopal gas tragedy was caused by the gas
8. What are the main components of Bronze Alloy?