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 Nitrogen Carbon dioxide Carbon monoxide Neon Nitrogen Carbon dioxide Carbon monoxide Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Bitumen Peat Anthracite Lignite Bitumen Peat Anthracite Lignite ANSWER DOWNLOAD EXAMIANS APP
Chemistry One carat of diamond is equal to 150 mg 200 mg 250 mg 100 mg 150 mg 200 mg 250 mg 100 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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