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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 31 August 2021, Shift 2, Chemistry Q50

Question 50 of 90 in this shift, Chemistry question 20 of 30, Section A.

Match List - I with List - II : List - I (Metal Ion) | List - II (Group in Qualitative analysis) (a) Mn2+\mathrm{Mn^{2+}} | (i) Group - III (b) As3+\mathrm{As^{3+}} | (ii) Group – IIA (c) Cu2+\mathrm{Cu^{2+}} | (iii) Group - IV (d) Al3+\mathrm{Al^{3+}} | (iv) Group – IIB Choose the most appropriate answer from the options given below :
  1. (1)(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  2. (2)(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
  3. (3)(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)Official answer
  4. (4)(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)

Official answer

Option 3

NTA final key.

Chapter
Coordination Compounds
Topic
Cation Analysis
Idea tested
Group IIA and IIB Sulfide Separation

Same topic in other shifts

All Cation Analysis questions
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  5. 4 Apr 2024, Shift 1 · Q72In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to :MediumSingle correct
  6. 6 Apr 2024, Shift 1 · Q72Match List I with List II LIST I (Precipitating reagent and conditions) A. NH4Cl+NH4OH\mathrm{NH_4Cl + NH_4OH} B. NH4OH+Na2CO3\mathrm{NH_4OH + Na_2CO_3} C.…MediumMatch the list

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.