MCQ
Nitrogen can be obtained from air by removing
- AOxygen
- BHydrogen
- CCarbon dioxide
- ✓Both $(a)$ and $(c)$
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Statement $I:$- In redox titration, the indicators used are sensitive to change in $pH$ of the solution.
Statement $II:$- In acid-base titration, the indicators used are sensitive to change in oxidation potential.
In the light of the above statements, choose the most appropriate answer from the options given below
$Xe{F_6}\,\xrightarrow{{ + {H_2}O}}A\,\xrightarrow{{ + {H_2}O}}B\,\xrightarrow{{ + {H_2}O}}C$
Assertion $A$ :Magnesium can reduce $Al _{2} O _{3}$ at a temperature below $1350^{\circ} C$, while above $1350^{\circ} C$ aluminium can reduce $MgO$.
Reason $R$ : The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements. choose most appropriate answer from the options given below