Diamonds are glittering and attractive because light Incident on them undergoes
1). highest refraction
2). multiple internal reflections
3). multiple surface reflections
4). hundred percent transmission
2. In nuclear reactors graphite is used as a an
3. Question 3.11:Suggest a list of metals that are extracted electrolytically.
4. The metal extracted from Bauxite is :
5. Which one of the following is radioactive ?
6. Which of the following elements has the lowest melting point?
7. Which is not a green house gas ?
8. Which of the following metals causes ItaiItal disease