Chemistry The two metal ions that cause hardness to water are: Sodium, Magnesium Calcium, Magnesium Sodium, Potassium Sodium, Calcium Sodium, Magnesium Calcium, Magnesium Sodium, Potassium Sodium, Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The graphite rods in the nuclear reactor undergo combustion which triggers the nuclear fission convert fast moving neutrons into thermal neutrons produce neutrons react with U to release energy undergo combustion which triggers the nuclear fission convert fast moving neutrons into thermal neutrons produce neutrons react with U to release energy ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Nitric acid Carbon monoxide Sulphuric acid Ozone Nitric acid Carbon monoxide Sulphuric acid Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Plaster of Paris' is made by partial dehydration of Blue vitriol Epsom salt Green vitriol Gypsum salt Blue vitriol Epsom salt Green vitriol Gypsum salt 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 Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead Nickel and cadmium Iron and cadmium Zinc and carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen is an essential constituent of all : Proteins Vitamins Carbohydrates Fats Proteins Vitamins Carbohydrates Fats ANSWER DOWNLOAD EXAMIANS APP
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