Chemistry The gas that causes suffocation and death when coal or coke is burnt in a closed room is Carbon di-oxide Ethane Methane Carbon monoxide Carbon di-oxide Ethane Methane Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'laughing gas' is Nitric oxide Nitrogen pentoxide Nitrogen dioxide Nitrous oxide Nitric oxide Nitrogen pentoxide Nitrogen dioxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry If water smells bad, then that odour can be removed by adding Activated carbon Deactivated nitrogen Alum Bleach Activated carbon Deactivated nitrogen Alum Bleach ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Collection of dust Lack of aeration Frequent use Oxidation of cellulose Collection of dust Lack of aeration Frequent use Oxidation of cellulose ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nuclear particles which are assumed to hold the nucleons together are mesons positrons neutrons electrons mesons positrons neutrons electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the main nitrogenous waste in humans ? Ammonia Ammonium Nitrate Urea Uric Acid Ammonia Ammonium Nitrate Urea Uric Acid ANSWER DOWNLOAD EXAMIANS APP
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