Chemistry In arc welding, Argon is used because of its Low reactivity with metal High flammability High calorific value Ability to lower the melting point of the metal Low reactivity with metal High flammability High calorific value Ability to lower the melting point of the metal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in dating archaeological findings ? 92235U 13H 614C 818O 92235U 13H 614C 818O 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 The gas which turns into liquid at the lowest temperature among the following is Oxygen Helium Hydrogen Nitrogen Oxygen Helium Hydrogen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Sodium carbonate Alum Potassium Permangante Lime Sodium carbonate Alum Potassium Permangante Lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is prevented from rusting by coating with zinc. This process is called as Sublimation Corrosion Reduction Galvanisation Sublimation Corrosion Reduction Galvanisation ANSWER DOWNLOAD EXAMIANS APP
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