1. Mercury is a :
2. The lustre of the metals is because of
3. The non-metal found in the liquid state is
4. Which among the following is liquid non-metal ?
5. Metal are good conductors, because
6. The first metal used by a man was
7. White phosphorus is generally kept under
8. Which metal is extracted from sea water?
9. The rusting of iron is a/an
10. When iron rusts, its weight
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