Chemistry Diamond is harder than graphite because of : Tetrahedral structure of diamond None of these Difference of crystalline structures Difference in layers of atoms Tetrahedral structure of diamond None of these Difference of crystalline structures Difference in layers of atoms ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Nitrogen Neon Carbon monoxide Carbon dioxide Nitrogen Neon Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Anthracite Lignite Bitumen Peat Anthracite Lignite Bitumen Peat ANSWER DOWNLOAD EXAMIANS APP
Chemistry One carat of diamond is equal to 100 mg 200 mg 150 mg 250 mg 100 mg 200 mg 150 mg 250 mg ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hardest allotrope of carbon is Diamond Coke Lamp black Graphite Diamond Coke Lamp black Graphite ANSWER DOWNLOAD EXAMIANS APP
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