Chemistry Which one is a naturally occuring noble gas Argon Sodium Potassium Boron Argon Sodium Potassium Boron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The product, 9-nitroanthracene is obtained from anthracene by the action of Nitric acid and acetic acid Nitric acid in excess Nitric acid and ethyl alcohol Nitric acid and acetic anhydride Nitric acid and acetic acid Nitric acid in excess Nitric acid and ethyl alcohol Nitric acid and acetic anhydride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 Cu(NO3)2 CuCO3 Cu(OH)2 CuO CuSO4 Cu(NO3)2 CuCO3 Cu(OH)2 CuO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Gold dissolves in Acetic acid Aqua-regia Nitric acid Hydrochloric acid Acetic acid Aqua-regia Nitric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry In electro-refining, the pure metal is deposited on Vessel Anode Electrolyte Cathode Vessel Anode Electrolyte Cathode ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compounds formed when hydrogen combines with p-block elements are called Polynuclear hydrides Metallic hydrides Ionic hydrides Molecular hydrides Polynuclear hydrides Metallic hydrides Ionic hydrides Molecular hydrides ANSWER DOWNLOAD EXAMIANS APP
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