Chemistry Conduction band electrons have more mobility than holes because they Are lighter Have negative charge Need less energy to move them Experience collision less frequently Are lighter Have negative charge Need less energy to move them Experience collision less frequently ANSWER DOWNLOAD EXAMIANS APP
Chemistry If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by Mercury Arsenic Lead Iron Mercury Arsenic Lead Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry If there is one million Mg2+ ions in MgCl2, how many chloride ions are there? Ten million One million Two million Half a million Ten million One million Two million Half a million ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following group of gases contributes to the 'Green House Effect'? Ammonia and Ozone Carbon dioxide and Methane Carbon monoxide and Sulphur dioxide Carbon tetraflouride and Nitrous oxide Ammonia and Ozone Carbon dioxide and Methane Carbon monoxide and Sulphur dioxide Carbon tetraflouride and Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the major pollutants of cigarette smoke? Carbon monoxide and benzene Dioxin and benzene Carbon monoxide and dioxin Carbon monoxide and nicotine Carbon monoxide and benzene Dioxin and benzene Carbon monoxide and dioxin Carbon monoxide and nicotine ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metals commonly used for electroplating are Nickel, Lead and Chromium Chromium, Copper and Nickel Gold, Sodium and Chromium Gold, Sodium and Potassium Nickel, Lead and Chromium Chromium, Copper and Nickel Gold, Sodium and Chromium Gold, Sodium and Potassium ANSWER DOWNLOAD EXAMIANS APP
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