Chemistry The gas that usually causes explosions in coal mines is Hydrogen Methane Carbon monoxide Air Hydrogen Methane Carbon monoxide Air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Lead Chromium Nickel Zinc Lead Chromium Nickel Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Higher concentration of nitrogen dioxide in atmosphere air causes Asphyxiation Bronchitis Cancer Corrosion Asphyxiation Bronchitis Cancer Corrosion ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron and manganese present as pollutants in water cannot be removed by________ Oxidation followed by settling and filtration Chlorination Ion exchange process Lime soda process or manganese zeolite process Oxidation followed by settling and filtration Chlorination Ion exchange process Lime soda process or manganese zeolite process ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the heaviest metal among the following? Iron Gold Copper Silver Iron Gold Copper Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a natural dye ? Aniline blue Crystal violet Alizarin Phenolphthalein Aniline blue Crystal violet Alizarin Phenolphthalein ANSWER DOWNLOAD EXAMIANS APP
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