Materials and Construction Platinum and silver are corroded by Sulphuric acid (10%) Caustic soda solution None of these Phosphoric acid Sulphuric acid (10%) Caustic soda solution None of these Phosphoric acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The increase in hardness of metal due to its cold working is termed as the __________ hardening. Flame Age Work Induction Flame Age Work Induction ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel Monel Rubber Glass Nickel Monel Rubber Glass Nickel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction With increase in carbide/graphite ratio in cast iron, its Ductility decreases Both A & B Neither A nor B Hardness & brittleness increases Ductility decreases Both A & B Neither A nor B Hardness & brittleness increases ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Galvanising (i.e., zinc coating) of steel sheets is done to Neither A nor B Both A & B Protect the base metal by cathodic protection Prevent its rusting by contact with corrosive atmosphere Neither A nor B Both A & B Protect the base metal by cathodic protection Prevent its rusting by contact with corrosive atmosphere ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The damage/deterioration of metals by the __________ action of fluids is called 'erosion'. Both A & B Corrosive Neither A nor B Abrasive Both A & B Corrosive Neither A nor B Abrasive ANSWER DOWNLOAD EXAMIANS APP
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