Question
Given below are two statements:
Statement-I : The number of pairs among $\left\lbrack {Al}_{2}O_{3} \right.\ $, $\left. \ {Cr}_{2}O_{3} \right\rbrack,\left\lbrack {Cl}_{2}O_{7},{Mn}_{2}O_{7} \right\rbrack,\left\lbrack {Na}_{2}O,V_{2}O_{3} \right\rbrack$ and $\lbrack CO$, $N_{2}O$ ] that contain oxides of same nature (acidic, basic, neutral or amphoteric) is 4.
Statement-II : Among ${Na}_{2}O,{Al}_{2}O_{3},CO$ and ${Cl}_{2}O_{7}$, the most basic and acidic oxides are ${Na}_{2}O$ and ${Cl}_{2}O_{7}$, respectively.
In the light of the above statements, choose the correct answer from the options given below :
Options
Solution
Sol. [Key Concept: Classify each oxide: ${Al}_{2}O_{3},{Cr}_{2}O_{3}$ amphoteric, $CO,N_{2}O$ neutral, ${Na}_{2}O,V_{2}O_{3}$ basic, ${Cl}_{2}O_{7},{Mn}_{2}O_{7}$ acidic; both statements come out true.]
Statement I :
${Al}_{2}O_{3},{Cr}_{2}O_{3}$ : Amphoteric
$CO,N_{2}O$ : Neutral
${Na}_{2}O,V_{2}O_{3}$ : Basic
${Cl}_{2}O_{7},{Mn}_{2}O_{7}$ : Acidic
Statement II :
Most basic oxide : ${Na}_{2}O$
Most acidic oxide : ${Cl}_{2}O_{7}$
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