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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 2 September 2020, Shift 2, Chemistry Q32

Question 32 of 75 in this shift, Chemistry question 7 of 25.

Three elements X, Y and Z are in the 3rd3^{\mathrm{rd}} period of the periodic table. The oxides of X, Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X, Y and Z is :
  1. (1)X<Y<Z\mathrm{X} < \mathrm{Y} < \mathrm{Z}Official answer
  2. (2)Z<Y<X\mathrm{Z} < \mathrm{Y} < \mathrm{X}
  3. (3)X<Z<Y\mathrm{X} < \mathrm{Z} < \mathrm{Y}
  4. (4)Y<X<Z\mathrm{Y} < \mathrm{X} < \mathrm{Z}

Official answer

Option 1

NTA final key (Sep 2020).

Chapter
Classification of Elements and Periodicity in Properties
Topic
Periodic Trends
Idea tested
Acidic and Basic Character of Oxides

Same idea in other shifts

Asked 12× in all
  1. 2 Apr 2026, Shift 2 · Q58The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:MediumSingle correct
  2. 5 Apr 2026, Shift 2 · Q58Given below are two statements : Statement I : The number of pairs among [Al2O3,Cr2O3]\mathrm{[Al_2O_3, Cr_2O_3]}, [Cl2O7,Mn2O7]\mathrm{[Cl_2O_7, Mn_2O_7]},…MediumTwo statements
  3. 1 Feb 2024, Shift 1 · Q87Among the following oxides of p-block elements, number of oxides having amphoteric nature is ________. Cl2O7\mathrm{Cl_2O_7}, CO,…MediumNumerical value
  4. 30 Jan 2024, Shift 2 · Q66Given below are two statements: Statement - I: Along the period, the chemical reactivity of the elements gradually increases from group 1…EasyTwo statements
  5. 31 Jan 2024, Shift 1 · Q67Consider the oxides of group 14 elements SiO2\mathrm{SiO_2}, GeO2\mathrm{GeO_2}, SnO2\mathrm{SnO_2}, PbO2\mathrm{PbO_2}, CO and GeO. The…MediumSingle correct
  6. 25 Jul 2022, Shift 2 · Q70The total number of acidic oxides from the following list is NO,N2O,B2O3,N2O5,CO,SO3,P4O10\mathrm{NO, N_2O, B_2O_3, N_2O_5, CO, SO_3, P_4O_{10}}MediumSingle correct
  7. 24 Jun 2022, Shift 1 · Q66Given below are the oxides : Na2O, As2O3, N2O, NO\mathrm{Na_2O,\ As_2O_3,\ N_2O,\ NO} and Cl2O7\mathrm{Cl_2O_7} Number of amphoteric oxides is :MediumSingle correct
  8. 28 Jun 2022, Shift 1 · Q67Given below are two statements : Statement I :The pentavalent oxide of group-15 element, E2O5\mathrm{E_2O_5}, is less acidic than trivalent…MediumTwo statements

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.