Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a ‘green house gas’ ? Chlorofluorocarbons Nitrogen Methane Carbon dioxide Chlorofluorocarbons Nitrogen Methane Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has Stable half filled 2p sub level Smaller atomic radius High nuclear charge High bond dissociation energy Stable half filled 2p sub level Smaller atomic radius High nuclear charge High bond dissociation energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gas released during Bhopal tragedy was : Ethyl isothiocyanate Methyl isothiocyanate Sodium isothiocyanate Potassium isothiocyanate Ethyl isothiocyanate Methyl isothiocyanate Sodium isothiocyanate Potassium isothiocyanate ANSWER DOWNLOAD EXAMIANS APP
Chemistry In a reaction of the type A+B ? C+D one could ensure it to be a first order reaction by : Increasing the concentration of a product Increasing the temperature Adding a catalyst Increasing the concentration of a reactant Increasing the concentration of a product Increasing the temperature Adding a catalyst Increasing the concentration of a reactant ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemically ‘Quick Silver is known as Copper Silver Aluminium Mercury Copper Silver Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
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