Chemistry Highly toxic gas which causes headache, visual difficulty, paralysis and even death is O3 CO2 All of these CO O3 CO2 All of these CO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ? Eutrophication Alkalinity Acidity Hardness Eutrophication Alkalinity Acidity Hardness ANSWER DOWNLOAD EXAMIANS APP
Chemistry In chemical terms, what are alums used for purifying water for drinking purposes ? Hydrated chlorides Double nitrate Nitrates of aluminium Double sulphates Hydrated chlorides Double nitrate Nitrates of aluminium Double sulphates ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ? Saltpetre Borax Hydrogen peroxide Sodium chloride Saltpetre Borax Hydrogen peroxide Sodium chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Electrolysis Roasting Oxidation Zone refining Electrolysis Roasting Oxidation Zone refining ANSWER DOWNLOAD EXAMIANS APP
Chemistry The green colour seen in firework displays is due to the chloride salt of : Calcium Barium Strontium Sodium Calcium Barium Strontium Sodium ANSWER DOWNLOAD EXAMIANS APP
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