Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . X–rays Gamma rays Ultraviolet rays (UV) Infra-red (IR) X–rays Gamma rays Ultraviolet rays (UV) Infra-red (IR) ANSWER DOWNLOAD EXAMIANS APP
Chemistry The manufacturing of iron from iron ore involves the process of Oxidation Fractional distillation Electrolysis Reduction Oxidation Fractional distillation Electrolysis Reduction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the toxic heavy metals is found in modern tannery industries ? Lead Nickel Zinc Chromium Lead Nickel Zinc Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metallic constituents of hard water are : Magnesium, tin and iron Calcium, magnesium and iron Iron, tin and calcium Magnesium, calcium and tin Magnesium, tin and iron Calcium, magnesium and iron Iron, tin and calcium Magnesium, calcium and tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is secondary air pollutant ? Dust particles SO2 NO2 Photochemical smog Dust particles SO2 NO2 Photochemical smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry When ice cubes are made, the entropy of water Does not change Increases May either increase or decrease depending on the process used Decreases Does not change Increases May either increase or decrease depending on the process used Decreases ANSWER DOWNLOAD EXAMIANS APP
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