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Chemistry Question 58 – JEE-MAIN 2026

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Given below are two statements : Statement I : The number of pairs among [Al2O3,Cr2O3], [Cl2O7,Mn2O7], [Na2O,V2O3] and [CO,N2O] that contain oxides of same nature (acidic, basic, neutral or amphoteric) is 4. Statement II : Among Na2O,Al2O3,CO and Cl2O7, the most basic and acidic oxides are Na2O and Cl2O7, respectively. In the light of the above statements, choose the correct answer from the options given below :

Understand the general trends in the acidic, basic, amphoteric, and neutral nature of oxides based on the position of the element in the periodic table and its oxidation state.

Step 1: Evaluate Statement I by classifying oxide pairs✦ Active

Let's classify the nature of each oxide in the given pairs:

Al2O3:AmphotericCr2O3:Amphoteric(Match)Cl2O7:AcidicMn2O7:Acidic(Match)Na2O:BasicV2O3:Basic(Match)CO:NeutralN2O:Neutral(Match)

All 4 pairs contain oxides of the same nature. Therefore, Statement I is TRUE.

Step 2: Evaluate Statement II by classifying and comparing oxides○ Expand

Let's classify the oxides mentioned in Statement II:

Na2O:Strongly Basic (alkali metal oxide)Al2O3:AmphotericCO:NeutralCl2O7:Strongly Acidic (non-metal oxide in highest oxidation state)

Among these, Na2O is indeed the most basic, and Cl2O7 is indeed the most acidic. Therefore, Statement II is TRUE.

Step 3: Determine the correct option○ Expand

Since both Statement I and Statement II are true, the correct option is the one stating that both statements are true.

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