Chemistry Which one of the following is used for dating very old objects of archaeological importance? Radium Phosphorus-31 Carbon-14 Tritium Radium Phosphorus-31 Carbon-14 Tritium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In a Carbonyl group a carbon atom makes double bond with Oxygen None of these Carbon Hydrogen Oxygen None of these Carbon Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Of the following, which one pollutes the air of a big city ? Lead Cadmium Copper Chromium Lead Cadmium Copper Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The BOD values of water indicate the Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical reduction Amount of organic debris Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical reduction Amount of organic debris Amount of oxygen used for biochemical oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Water can be separated from alcohol water mixture by Decantation Distillation Evaporation Sublimation Decantation Distillation Evaporation Sublimation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium bicarbonate is commercially known as Washing soda Soda lime Baking soda Caustic soda Washing soda Soda lime Baking soda Caustic soda ANSWER DOWNLOAD EXAMIANS APP
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