Chemical Process Temporary hardness of water can be removed by Filtration (through gravity sand filter) Addition of alum (a coagulant) Addition of lime Boiling Filtration (through gravity sand filter) Addition of alum (a coagulant) Addition of lime Boiling ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Washing of coal is done to Both B and C Remove the adhering impurities Reduce the ash content Remove the inherent impurities Both B and C Remove the adhering impurities Reduce the ash content Remove the inherent impurities ANSWER DOWNLOAD EXAMIANS APP
Chemical Process High acid value of an oil or fat is an indication of Storage under improper conditions Absence of unsaturation None of these Its smaller molecular weight Storage under improper conditions Absence of unsaturation None of these Its smaller molecular weight ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Na₂CO₃ is called Calcite Washing soda Soda ash Plaster of paris Calcite Washing soda Soda ash Plaster of paris ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Naphthols are derivates of Naphthalene Xylene Methyl amine Phenol Naphthalene Xylene Methyl amine Phenol ANSWER DOWNLOAD EXAMIANS APP
Chemical Process Plasticisers are added to paints to Increase atmospheric oxidation Make it corrosion resistant Give elasticity & prevent cracking of the film Make glossy surface Increase atmospheric oxidation Make it corrosion resistant Give elasticity & prevent cracking of the film Make glossy surface ANSWER DOWNLOAD EXAMIANS APP
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