Question

Choose the correct set of options matching appropriate properties of column-I with column-II $\begin{array}{cccc}& \text{Column- I}& & \text{Column- II}\\ \left(a\right)& 0.1MA{l}_2(S{O}_4{)}_3& \left(p\right)& \text{Solution with highest boiling point}\\ \left(b\right)& 0.1MAlP{O}_4& \left(q\right)& \text{Van't Hoff factor is greater than 1}\\ \left(c\right)& 0.1MUrea& \left(r\right)& \text{Solution with lowest osmotic pressure}\\ \left(d\right)& 0.1MMgC{l}_2& \left(s\right)& \text{Solution with lowest freezing point}\\ & & \left(t\right)& \text{Solution with lowest boiling point}\end{array}$

• A. (a) – (p, q); (b) – (r, t); (c) – (q); (d) – (p, q, s)
• B. (a) – (p); (b) – (q); (c) – (s); (d) – (t)
• C. (a) – (p, q, s); (b) – (q); (c) – (r, t); (d) – (q)
• D. (a) – (r, t); (b) – (r, s, t); (c) – (p, q); (d) – (s)

Answer 1

The correct option is C (a) – (p, q, s); (b) – (q); (c) – (r, t); (d) – (q)

Use the concept of van’t Hoff factor,

$A{l}_2(S{O}_4{)}_3$ has a van't Hoff factor of 5
$AlP{O}_4$ has a van't Hoff factor of 2
Urea has a van't Hoff factor of 1
$MgC{l}_2$ has a van't Hoff factor of 3