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Q.
Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is
IIT JEEIIT JEE 2010Equilibrium
Solution:
Basic salts solution will have $pH >7$, will change colour of litmus paper red to blue
$KCN , K _{2} CO _{3}$ and $LiCN$ are the only basic salts among these
