Chemistry Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water Manganese Magnesium None of these Calcium Manganese Magnesium None of these Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of biogas is Acetic acid Methyl alcohol Oxygen Methane Acetic acid Methyl alcohol Oxygen Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following phenomenon is considered responsible for Global Warming? Fire in coal mines Greenhouse effect Dry farming Trade winds Fire in coal mines Greenhouse effect Dry farming Trade winds ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stainless steel is usually made by alloying the steel with Manganese and copper Copper and chromium Copper and nickel Chromium and nickel Manganese and copper Copper and chromium Copper and nickel Chromium and nickel ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not an anasthetic agent in surgical operations? Nitrous oxide Ether Chloroform Acetone Nitrous oxide Ether Chloroform Acetone ANSWER DOWNLOAD EXAMIANS APP
Chemistry The BOD values of water indicate the Amount of organic debris Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical reduction Amount of organic debris Amount of oxygen used for biochemical oxidation Amount of ozone used for biochemical oxidation Amount of oxygen used for biochemical reduction ANSWER DOWNLOAD EXAMIANS APP
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