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