MCQ
Select the compound in which chlorine is assigned the oxidation number $ +5$
- A$HCl{O_4}$
- B$HCl{O_2}$
- ✓$HCl{O_3}$
- D$HCl$
$1 + x - 2 \times 3 = 0$; $x = 6 - 1 = + 5$.
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| Column $I$ (Mixture of compounds) | Column $II$ (Separation Technique) |
| $A$ $H _2 O / CH _2 Cl _2$ | $I$ Crystallization |
| $B$ $Image$ | $II$ Differential solvent extraction |
| $C$ Kerosene/Naphthalene | $III$ Column chromatography |
| $D$ $C _6 H _{12} O _6 / NaCl$ | $IV$ Fractional Distillation |
Correct match is : 
Statement $I :$ Phenols are weakly acidic.
Statement $II :$ Therefore they are freely soluble in $NaOH$ solution and are weaker acids than alcohols and water.
Choose the most appropriate option