Chemistry Ultra purification of a metal is done by : Zone melting Slugging Leaching Smelting Zone melting Slugging Leaching Smelting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Hydrogen + Liquid Oxygen Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon Liquid Hydrogen + Liquid Oxygen Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Magnesium Iron Oxygen Silicon Magnesium Iron Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Laughing gas is Nitric oxide Nitrogen trioxide Nitrogen pentoxide Nitrous oxide Nitric oxide Nitrogen trioxide Nitrogen pentoxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is least likely to be found in commercial fertilisers? Potassium Phosphorous Silicon Nitrogen Potassium Phosphorous Silicon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not soluble in water ? Potassium sulphate Lead Sulphate Sodium sulphate Zinc sulphate Potassium sulphate Lead Sulphate Sodium sulphate Zinc sulphate ANSWER DOWNLOAD EXAMIANS APP
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