Chemistry Which one of the following elements is used in the manufacture of safety matches? Silicon Sodium Graphite Phosphorus Silicon Sodium Graphite Phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 19 36 17 53 19 36 17 53 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Soap helps in better cleaning of clothes because It reduces the surface tension of solution It gives strength to solution Soap acts like catalyst It absorbs the dirt It reduces the surface tension of solution It gives strength to solution Soap acts like catalyst It absorbs the dirt ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Water vapour Carbon monoxide Carbon dioxide Ozone Water vapour Carbon monoxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry If we burn graphite, Residue will be left No residue will be left It will not burn It will change into diamond Residue will be left No residue will be left It will not burn It will change into diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vinegar is ________ . Diluted formic acid Diluted acetic acid Glacial formic acid Glacial acetic acid Diluted formic acid Diluted acetic acid Glacial formic acid Glacial acetic acid ANSWER DOWNLOAD EXAMIANS APP
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