Chemistry The metal used to recover copper from a solution of copper sulphate is Na Fe Ag Hg Na Fe Ag Hg ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant inert gas in the atmosphere is Helium Neon Krypton Argon Helium Neon Krypton Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used as a lubricant in heavy machines? Phosphorus Graphite Sulphur Bauxite Phosphorus Graphite Sulphur Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone depletion in the stratosphere is mainly caused by Chlorogluorocarbons NO NO2 SO2 Chlorogluorocarbons NO NO2 SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Barium peroxide Sodium peroxide Hydrogen peroxide Ozone Barium peroxide Sodium peroxide Hydrogen peroxide Ozone ANSWER DOWNLOAD EXAMIANS APP
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