Ionic Equilibrium
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Question : 15 of 19
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Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is _____.
KCN ,K 2 S O 4 ( N H 4 ) 2 C 2 O 4 A n ( N O 3 ) 2 F e C l 3 K 2 C O 3 N H 4 N O 3
KCN ,
[JEE Adv 2010 P1]
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