MCQ
Pure $NaCl$ is prepared by saturating a cold saturated solution of common salt in water with $HCl$ gas. The principle used is
- ALe Chatelier principle
- BDisplacement law
- ✓Common ion effect
- DFractional distillation
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$X \rightleftharpoons Y + Z - - - - - - \left( 1 \right)$
$A \rightleftharpoons 2B - - - - - - \left( 2 \right)$
are in ratio of $9 :1$. If degree of dissociation of $X$ and $A$ be equal, then total pressure at equilibrium $(1)$ and $(2)$ are in the ratio