The metal extracted from Bauxite is
1). Silver
2). Copper
3). Manganese
4). Aluminum
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1. The most important ore of aluminium is
2. In which of the following states maximum iron ore is found ?
3. Which of the following is not an addition polymer?
4. Select the one which is not a mixture:
5. Which one of the following?contains cobalt?
6. Which of the following metals causes Itai-Itai disease ?
7. How many electrons are there in a Hydrogen atom?
8. The advantage of detergents over soaps is
9. Which one of the following metals pollutes the air of a city having large number of automobiles
10. Atomic number of which of the following elements is greater than that of Copper?