Chemistry The elements in the modern Periodic table are arranged according to their Mass number Atomic number Atomic Weight Neutron number Mass number Atomic number Atomic Weight Neutron number ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Lack of aeration Oxidation of cellulose Collection of dust Frequent use Lack of aeration Oxidation of cellulose Collection of dust Frequent use ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is a soluble salt in H2O Zn(OH)2 CuS CaCl2 PbCl2 Zn(OH)2 CuS CaCl2 PbCl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused due to pollution of atmosphere by Oxides of nitrogen and sulphur None of these Oxides of carbon and nitrogen Oxides of nitrogen and phosphorous Oxides of nitrogen and sulphur None of these Oxides of carbon and nitrogen Oxides of nitrogen and phosphorous ANSWER DOWNLOAD EXAMIANS APP
Chemistry How many neutrons are there in 92U238 atom ? 330 238 146 92 330 238 146 92 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical substance present in bones and teeth is Calcium sulphate Calcium chloride Calcium borate Calcium phosphate Calcium sulphate Calcium chloride Calcium borate Calcium phosphate ANSWER DOWNLOAD EXAMIANS APP
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