Amongst the following, find the total number of compounds whose aqueous solution turns red litmus paper blue.KCN, K2SO4, NH42C2O4, NaCl, ZnNO32, FeCl3,K2CO3,NH4NO3,LiCN
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answer is 3.
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Detailed Solution
Basic salt solution will have pH > 7, will change colour of litmus paper red to blue. KCN, K2CO3, LiCN are the only basic salts among these.
Amongst the following, find the total number of compounds whose aqueous solution turns red litmus paper blue.KCN, K2SO4, NH42C2O4, NaCl, ZnNO32, FeCl3,K2CO3,NH4NO3,LiCN