Chemically vermillion is
1). Calcium Carbonate
2). Potassium Nitrate?
3). Potassium Sulphide
4). Merucry (II) Sulphide?
1. The ore which is found in abundance in India is
2. Which type of radiations are absorbed by the upper layer of the atmosphere?
3. The National Chemical Laboratoly (India) is located in
4. The percentage of Nitrogen in Air is
5. Which one of the following pairs is NOT correctly matched
7. An example of semiconductor is
8. Which one of the following is a major greenhouse gas?
9. The function of skimming tank in sewage treatment is to remove