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Subject :NSO    Class : Class 7

Which of the following options represents the compounds in increasing order of their pH values?

ACopper sulphate, sodium carbonate, zinc sulphate
BAmmonium nitrate, ammonium carbonate, potassium carbonate
CSodium carbonate, zinc sulphate, ammonium chloride
DSodium carbonate, zinc sulphate, ammonium chloride


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