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