Chemistry The iron ore which contains 72% of iron is : Limonite Haematite Magnetite Siderite Limonite Haematite Magnetite Siderite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a man-made source of air pollution ? All of these Forest fire Bacterial action in soil and swamp areas Automobile exhaust All of these Forest fire Bacterial action in soil and swamp areas Automobile exhaust ANSWER DOWNLOAD EXAMIANS APP
Chemistry German silver used for making utensils is an alloy of Copper, zinc, nickel Copper, silver, nickel Copper, zinc, aluminium Copper, nickel, aluminium Copper, zinc, nickel Copper, silver, nickel Copper, zinc, aluminium Copper, nickel, aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Alkalinity Eutrophication Acidity Hardness Alkalinity Eutrophication Acidity Hardness 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 Which of the following pollutants is main product of automobile exhaust ? CO2 NO CO Hydrocarbons CO2 NO CO Hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
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