Which among the following is liquid non-metal ?
A). Mercury
B). Bromine
C). Water
D). Alcohol
1. Which one of the following is radioactive
2. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water
3. Black lung disease occurs in people working in
4. Which of the following is not a noble gas ?
5. Bleaching action of moist sulphur dioxide is because of its
6. Which of the following is not a precious/semi-precious stone?
8. The material used in solar cells contains
9. Which among the following elements is found in maximum percentage in the human body ?
10. The name of plastic polymer from which combs, toys, bowls etc., can be made, is