The metal extracted from Bauxite is
1). Silver
2). Copper
3). Manganese
4). Aluminum
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1. The gas which emits from rice field is
2. The most reactive among the halogens is
3. The hardest form of carbon is
4. What material is used to make electric heater coil ?
5. Which type of fire extinguisher is used for petroleum fire ?
6. The polymer used in making plastic crockery is
7. The chemical name of baking soda is
9. Which of the following in automobile exhaust can cause cancer