MCQ
Purine derivative among the following bases is
- ✓Guanine
- BCytosine
- CThymine
- DUracil
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| Column $-I$ (various solutions) |
Column $-II$ (Their freezing point ) |
||
| $a$ | $0.1\,M$ $BaCl_2$ solution | $p$ | $271\,K$ |
| $b$ | $0.1\,M$ $NaCl$ solution | $q$ | $270\,K$ |
| $c$ | $0.1\,M\, K_3 [Fe(CN)_6]$ solution | $r$ | $268\,K$ |
| $d$ | $0.1\,M\, Al_2 (SO_4)_3$ solution | $s$ | $269\,K$ |
Given : Freezing point of $0.1\,M$ sucrose solution $= 272\,K$ and $F.pt.$ of water $= 273\,K$
Which of the following option show correct matches ?
(Assume : Densities of the solutions $A$ and $B$ are the same as that of water and the soluble salts dissociate completely.)
Use: Molal elevation constant (Ebullioscopic Constant), $K _{ b }=0.5 K kg mol ^{-1}$; Boiling point of pure water as $100^{\circ} C$.)
($1$) The value of $x$ is
($2$) The value of $|y|$ is