Chemistry Name two elements that find wide application in transistor industry Iridium and Germanium Silicon and Germanium Carbon and Platinum Tungsten and Platinum Iridium and Germanium Silicon and Germanium Carbon and Platinum Tungsten and Platinum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of Cobalt in Vitamin B12 was established for the first time by Sodium Nitroprusside test Hydrolysis test Borax-Bead test Spectroscopy Sodium Nitroprusside test Hydrolysis test Borax-Bead test Spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major harmful gas emitted by automobile vehicles which causes air pollution is Carbon dioxide Carbon Monoxide Methane Ozone gas Carbon dioxide Carbon Monoxide Methane Ozone gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry The depletion in Ozone layer is caused by ________ . Chlorofluorocarbons Methane Nitrous oxide Carbon dioxide Chlorofluorocarbons Methane Nitrous oxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alum is used as An analgesic A fertilizer A disinfectant A purifier for water An analgesic A fertilizer A disinfectant A purifier for water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Williamson's synthesis is widely used in the laboratory preparation of Esters Aldehydes Alcohols Ethers Esters Aldehydes Alcohols Ethers ANSWER DOWNLOAD EXAMIANS APP
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