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 Brass is a Heterogeneous mixture Compound Element Homogeneous mixture Heterogeneous mixture Compound Element Homogeneous mixture ANSWER DOWNLOAD EXAMIANS APP
Chemistry Poison used for killing rats is Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Calcium phosphide (Ca3P2) Magnesium phosphide (Mg3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Calcium phosphide (Ca3P2) Magnesium phosphide (Mg3P2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a natural dye ? Crystal violet Aniline blue Phenolphthalein Alizarin Crystal violet Aniline blue Phenolphthalein Alizarin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of these acids is not organic in origin? Sulphuric acid Lactic acid Oxalic acid Citric acid Sulphuric acid Lactic acid Oxalic acid Citric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical used in developing photographic films is Silver bromide Hydroquinone Sodium sulphate Hypo Silver bromide Hydroquinone Sodium sulphate Hypo ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS