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Wednesday, February 2, 2011

Diamond is element or compound : Element ,allotrope of carbon
Whichsubstances is a bad conductor of electricity but a good conductor of heat? Mica
Potassium Permanganate is used for purifying drinking water, because : it is an oxidising agent

Which  metals remain in liquid for under normal conditions? Mercury

Which  is the lightest metal? Lithium

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