Chemistry Diamond is harder than graphite because of : None of these 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Neon Carbon monoxide Carbon dioxide Nitrogen Neon Carbon monoxide Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Peat Anthracite Bitumen Lignite Peat Anthracite Bitumen 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 Coke Lamp black Diamond Graphite Coke Lamp black Diamond ANSWER DOWNLOAD EXAMIANS APP
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