Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 6, 8, 4 2, 10, 8 2, 8, 10 2, 8, 8, 2 2, 6, 8, 4 2, 10, 8 2, 8, 10 2, 8, 8, 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Muddy water is treated with alum in purification process, itis termed as : Emulsification Adsorption Absorption Coagulation Emulsification Adsorption Absorption Coagulation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas that causes suffocation and death when coal or coke is burnt in a closed room is Carbon monoxide Methane Carbon di-oxide Ethane Carbon monoxide Methane Carbon di-oxide Ethane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon dioxide Water vapour Ozone Carbon monoxide Carbon dioxide Water vapour Ozone Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
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