1.

The precipitate of calcium fluoride(K_(sp)=1.7xx10^(-10)) is obtained when equal volumes of the following are mixed :

Answer»

`10^(-4)M Ca^(2+)`and`10^(-4)M F^(-)`
`10^(-2)M Ca^(2+)`and`10^(-3)M F^(-)`
`10^(-5)M Ca^(2+)`and`10^(-3)M F^(-)`
`10^(-3)M Ca^(2+)`and`10^(-5)M F^(-)`

ANSWER :B


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