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