General Science Brass gets discoloured in air because of the presence of which of the following gases in air? Oxygen Hydrogen Sulphide Nitrogen None of the listed here Oxygen Hydrogen Sulphide Nitrogen None of the listed here ANSWER DOWNLOAD EXAMIANS APP
General Science Permanent hardness of water may be removed by the addition of Potassium Permanganate Alum Sodium Carbonate Lime Potassium Permanganate Alum Sodium Carbonate Lime ANSWER DOWNLOAD EXAMIANS APP
General Science Which of the following are the ingredients of gun metal? Iron, Zinc and Titanium Copper, Tin and Zinc Iron, Brass and Tin Iron and Tin Iron, Zinc and Titanium Copper, Tin and Zinc Iron, Brass and Tin Iron and Tin ANSWER DOWNLOAD EXAMIANS APP
General Science Chlorophyll is a naturally occurring chelate compound in which central metal is Magnesium Calcium Copper Iron Magnesium Calcium Copper Iron ANSWER DOWNLOAD EXAMIANS APP
General Science Actinides are the elements with atomic numbers from 89 to 103 97 to 104 101 to 115 36 from 43 89 to 103 97 to 104 101 to 115 36 from 43 ANSWER DOWNLOAD EXAMIANS APP
General Science Chemical formula for water is None of the listed here H2O CaSiO3 NaA1O2 None of the listed here H2O CaSiO3 NaA1O2 ANSWER DOWNLOAD EXAMIANS APP
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