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