Chemistry Which one of the following elements is least likely to be found in commercial fertilisers? Nitrogen Potassium Silicon Phosphorous Nitrogen Potassium Silicon Phosphorous ANSWER DOWNLOAD EXAMIANS APP
Chemistry Heating of a ore below its melting point in the absence of air is known as Calcination Roasting Refining Smelting Calcination Roasting Refining Smelting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Oxygen + Liquid Argon Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Hydrogen + Liquid Oxygen Liquid Oxygen + Liquid Argon Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Hydrogen + Liquid Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is colourless ? Chlorine Oxygen Phosphorus Sulphur Chlorine Oxygen Phosphorus Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Lead peroxide and lead Iron and cadmium Zinc and carbon Nickel and cadmium Lead peroxide and lead Iron and cadmium Zinc and carbon Nickel and cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon monoxide Ozone Carbon dioxide Water vapour Carbon monoxide Ozone Carbon dioxide Water vapour ANSWER DOWNLOAD EXAMIANS APP
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