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