Chemistry Iron is prevented from rusting by coating with zinc. This process is called as Galvanisation Sublimation Corrosion Reduction Galvanisation Sublimation Corrosion Reduction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The alkaloid naturally found in coffee, cocoa and cola nut is Cocaine Tannin Caffeine Morphine Cocaine Tannin Caffeine Morphine ANSWER DOWNLOAD EXAMIANS APP
Chemistry In arc welding, Argon is used because of its 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 Low reactivity with metal High flammability High calorific value ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- Na+ > O2- > N3- > F- N3- > O2- > F- > Na+ N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Iron Magnesium Silicon Oxygen Iron Magnesium Silicon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals does not react with water to produce Hydrogen ? Lithium Potassium Sodium Cadmium Lithium Potassium Sodium Cadmium ANSWER DOWNLOAD EXAMIANS APP
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