Chemistry The BOD values of water indicate the Amount of oxygen used for biochemical reduction Amount of organic debris Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical oxidation Amount of oxygen used for biochemical reduction Amount of organic debris Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal does not undergo corrosion due to the formation of oxide layer? Iron Copper Zinc Aluminium Iron Copper Zinc Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Total number of halogen elements found in the periodic table is 8 5 13 3 8 5 13 3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogen sulphide Aluminium sulphide Aluminium phosphide Hydrogenated wafers Hydrogen sulphide Aluminium sulphide Aluminium phosphide Hydrogenated wafers ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of biogas is Acetic acid Oxygen Methyl alcohol Methane Acetic acid Oxygen Methyl alcohol Methane ANSWER DOWNLOAD EXAMIANS APP
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