Chemistry Diamond is harder than graphite because of : Difference in layers of atoms 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Nitrogen Carbon monoxide Neon Carbon dioxide Nitrogen Carbon monoxide Neon Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Bitumen Anthracite Peat Lignite Bitumen Anthracite Peat Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry One carat of diamond is equal to 150 mg 100 mg 250 mg 200 mg 150 mg 100 mg 250 mg 200 mg ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hardest allotrope of carbon is Graphite Diamond Coke Lamp black Graphite Diamond Coke Lamp black ANSWER DOWNLOAD EXAMIANS APP
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