Chemistry The major constituent of air is nitrogen hydrogen oxygen carbon dioxide nitrogen hydrogen oxygen carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Poison used for killing rats is Zinc phosphide (Zn3P2) Magnesium phosphide (Mg3P2) Calcium phosphide (Ca3P2) Magnesium nitride (Mg3N2) Zinc phosphide (Zn3P2) Magnesium phosphide (Mg3P2) Calcium phosphide (Ca3P2) Magnesium nitride (Mg3N2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide bleaches colouring matter by : Reduction Decomposition Dehydration Oxidation Reduction Decomposition Dehydration Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is ozone oxygen helium methane ozone oxygen helium methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The formula C6H5-CO-CH3 represents Acetic acid Phenyl acetate Acetone Acetophenone Acetic acid Phenyl acetate Acetone Acetophenone ANSWER DOWNLOAD EXAMIANS APP
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