Chemistry Which of the following is not a method of preparing oxygen? Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water Fractional distillation of liquid air Decomposition of manganese dioxide Decomposition of potassium permanganate Electrolysis of water ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver halides are used in photographic plates because they are Oxidised in air Reduced by light Soluble in hyposolution Totally colourless Oxidised in air Reduced by light Soluble in hyposolution Totally colourless ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contains maximum percentage of carbon ? Cast iron Stainless steel High speed steel Wrought iron Cast iron Stainless steel High speed steel Wrought iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry High concentration hydrocarbon pollutants in atmospheric air causes Silicosis Respiratory diseases (e.g.asthma) Reduced crop yield Cancer Silicosis Respiratory diseases (e.g.asthma) Reduced crop yield Cancer ANSWER DOWNLOAD EXAMIANS APP
Chemistry Thermal electricity is generated by using which of these ? Coal only None of these Coal and Natural Gas only Coal, Natural Gas and Petroleum Coal only None of these Coal and Natural Gas only Coal, Natural Gas and Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The items amenable to detection by soft x-rays are genuine coins from counterfeit coins contrabands narcotics lead in bullets genuine coins from counterfeit coins contrabands narcotics lead in bullets ANSWER DOWNLOAD EXAMIANS APP
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