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JEE Main 20209 JanuaryMorning Shift
Exam
JEE Main
Year
2020
Date
9 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2020 · 9 January · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties

The acidic, basic and amphoteric oxides, respectively, are

The acidic, basic and amphoteric oxides, respectively, are

Options

  1. ANa2O,SO3,Al2O3N{a}_{2}O, S{O}_{3}, A{l}_{2}{O}_{3}
  2. BCl2O,CaO,P4O10C{l}_{2}O, CaO, {P}_{4}{O}_{10}
  3. CN2O3,Li2O,Al2O3{N}_{2}{O}_{3}, L{i}_{2}O, A{l}_{2}{O}_{3}
  4. DMgO,Cl2O,Al2O3MgO, C{l}_{2}O, A{l}_{2}{O}_{3}

Correct answer

C. N2O3,Li2O,Al2O3{N}_{2}{O}_{3}, L{i}_{2}O, A{l}_{2}{O}_{3}

Step-by-step solution

Non-metal oxides are acidic in nature as they produce acidic solution by reacting with water, so here Cl2O,P4O10,SO3{Cl}_{2}O, {P}_{4}{O}_{10}, {SO}_{3} are acidic oxides which produce HOCl,H3PO4,H2SO4HOCl, {H}_{3}{PO}_{4}, {H}_{2}{SO}_{4} respectively, with water.

Alkali metal and alkaline earth metal oxides are basic in nature, as they produce metal hydroxide solution with water and metal hydroxides are basic in nature.

Here, Na2O,CaO,Li2O,MgO{Na}_{2}O, CaO, {Li}_{2}O, MgO are basic hydroxides which form NaOH,Ca( OH )NaOH, Ca{\left(\text{ OH }\right)}_{2}, LiOH, Mg{\left(OH\right)}_{2} respectively, with water.

Al2O3{Al}_{2}{O}_{3} is amphoteric oxide as it can react either with acid or base to form salt and water.

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