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