Which of the following elements has the lowest melting point?
1). Platinum
2). Carbon
3). Cobalt
4). Krypton
1. Which halide is used in making sensitive emulsion on photograhic film?
3. Which of the following could be used as fuel in propellant or rockets ?
4. The major harmful gas emitted by automobile vehicle which causes air pollution is
5. The polymer used in making plastic crockery is
6. What is formed when Carbon Dioxide is passed through Lime Water?
7. Question 14.23:The two strands in DNA are not identical but are complementary. Explain.
8. Which one of the following metals does not react with water to produce Hydrogen ?
9. Radioactive disintegration of uranium ultimately results in formation of
10. The blotting technique used to identify the isolated protein is ________