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A solution of 18%mass/vol glucose is iso...

A solution of 18%`mass`/`vol` glucose is isotonic with `x%``mass`/`vol`KCl solution.If KCl is 90% dissociated,then value of x is (Mol .mass of KCl=74.5`gmol^(-1)`)

A

`2.67`

B

`4.35`

C

`3.92`

D

`3.12`

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