Which mineral is the ore Of aluminium?
1). Haematite
2). Bauxite
3). Magnetite
4). Siderite
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1. Which one of the following is an insulator?
2. The freezer in a refrigerator isfitted near the top
3. Chemical formula of washing soda is
4. Which of the following induces souring of milk?
5. The important ore of aluminium is
6. The purest form of water is
7. Fementation of ethyl alcohol into acetic acid is done by-
8. The washing machine works on the principle of ____________