Compartment `A` and `B` have the following combinations of solution: `{:(,A,B),(1,0.1 M KCl,0.2 M KCl),(2,0.1%(m//V) NaCl,10% (m//V) NaCl),(3,18 gL^(-1) "glucose",34.2 gL^(-1) "sucrose"),(3,20% (m//V) "glucose",10% (m//V) "glucose"):}` Answer the following question: Indicate the number of solutions which is/are isotonic.A. `1 only`B. `3 only`C. `4 only`D. `2 only`

Compartment `A` and `B` have the following combinations of solution:

1.	Compartment `A` and `B` have the following combinations of solution: `{:(,A,B),(1,0.1 M KCl,0.2 M KCl),(2,0.1%(m//V) NaCl,10% (m//V) NaCl),(3,18 gL^(-1) "glucose",34.2 gL^(-1) "sucrose"),(3,20% (m//V) "glucose",10% (m//V) "glucose"):}` Answer the following question: Indicate the number of solutions which is/are isotonic.A. `1 only`B. `3 only`C. `4 only`D. `2 only`
Answer» Correct Answer - B Isontonic solution have same molarity. Molarity of `18 g` glucose =`(18/276)//(1000/1000)=0.065` Molarity of `34.2 g` sucrose = `(34.2/518)//(1000/1000) = 0.066` The concentration of `18 g L^(-1)` glucose is same to `34.2 g L^(-1)` sucrose.

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