The National Chemical Laboratoly (India) is located in
1). Mumbai
2). Bangaluru
3). Hyderabad
4). Pune
3. Table salt gets moist during rainy season because
4. Which one of the following elements is used in the manufacture of safety matches?
5. Dry ice is the solid form of :
6. The important ore of aluminium is
7. Which one of the following metals does not react with water to produce Hydrogen ?
8. Heavy metals got their name because compared to other atoms they have
9. The chemical substance present in bones and teeth is
10. Among the following iron ores, the highest percentage of iron content is found in–