MCQ
The Van't Hoff factor $i$ for a $0.2 $ molal aqueous solution of urea is
- A$0.2$
- B$0.1$
- C$1.2$
- ✓$1.0$
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(Mass of proton $= 1.67 \times 10^{-27}\, kg$ and $h = 6.63 \times 10^{-34}\, Js$)

$(1)$ $BeCl _2, CO _2, BCl _3, CHCl _3$
$(2)$ $SO _2, C _6 H _5 Cl , H _2 Se , BrF _5$
$(3)$ $BF _3, O _3, SF _6, XeF _6$
$(4)$ $NO _2, NH _3, POCl _3, CH _3 Cl$
(Atomic numbers $Ce =58, Gd =64$ and $Eu =63 .)$
$(a)$ $\left( NH _{4}\right)_{2}\left[ Ce \left( NO _{3}\right)_{6}\right]$
$(b)$ $Gd \left( NO _{3}\right)_{3}$ and
$(c)$ $Eu \left( NO _{3}\right)_{3}$
Answer is :
