State which of the following methods is generally used for preparing the salts 1 to 5 given below:A: Neutralisation — insoluble base and dil. acidB: Neutralisation — alkali and dil. acidC: Simple displacement — active metal and dil. acidD: Direct combinationE: Precipitation [double decomposition] 1. PbCO3 2. Zn(NO3)2 3. NaCl 4. Cu(NO3)2 5. FeS
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Answer
E: Precipitation (Double decomposition)
C: Simple displacement — active metal and dil. acid