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