Chemistry Which of the following metals is not a pollutant ? Aluminium Mercury Lead Arsenic Aluminium Mercury Lead Arsenic ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a gaseous air pollutant? Oxides of sulphur Oxides of nitrogen Hydrocarbon Smoke Oxides of sulphur Oxides of nitrogen Hydrocarbon Smoke ANSWER DOWNLOAD EXAMIANS APP
Chemistry The water pollution in river is measured by the dissolved amount of Chlorine Ozone Oxygen Nitrogen Chlorine Ozone Oxygen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The method of concentrating the ore which makes use of the difference in density between ore and impurities is called magnetic separation levigation liquation leaching magnetic separation levigation liquation leaching ANSWER DOWNLOAD EXAMIANS APP
Chemistry Suspension particles have the size between 10–5 – 10–7cm 10–1 – 10–2 cm 10–8 – 10–10cm 10–2 – 10–4 cm 10–5 – 10–7cm 10–1 – 10–2 cm 10–8 – 10–10cm 10–2 – 10–4 cm ANSWER DOWNLOAD EXAMIANS APP
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