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A

1. Mercury and Bromine are the metal and non-metal who are in liquid state in room temperature.

2. Oxide of metal are always basic because metal hydroxide release OH- ions.

3. colour will be red as its acidic and phenopthelin drop helps us identify acid or base

B

IRON - For making rails

oxygen-for living being inhale during respiration

chlorine- for disinfecting water.

copper- for making electrical wire

F- Diamond is a form of carbon which doesnt conduct electricity

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