Chemistry Brass gets discoloured in air due to constant exposure in presence of: Aluminium phosphide Aluminium sulphide Hydrogenated wafers Hydrogen sulphide Aluminium phosphide Aluminium sulphide Hydrogenated wafers Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of Closed system Isothermal system Isobaric system Open system Closed system Isothermal system Isobaric system Open system ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron rusts quickly in River water Sea water Distilled water Rain water River water Sea water Distilled water Rain water ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the covalency of nitrogen in ammonia molecule 2 4 3 5 2 4 3 5 ANSWER DOWNLOAD EXAMIANS APP
Chemistry An example of major air pollutant is Carbon monoxide Oxygen Helium Carbon dioxide Carbon monoxide Oxygen Helium Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a nitrogenous fertilizer ? CaCN2 Urea Ca(CN)2 NH4NO3 CaCN2 Urea Ca(CN)2 NH4NO3 ANSWER DOWNLOAD EXAMIANS APP
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