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Friday, 9 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 6 September 2020, Shift 2, Chemistry Q38

Question 38 of 75 in this shift, Chemistry question 13 of 25.

Mischmetal is an alloy consisting mainly of :
  1. (1)lanthanoid metalsOfficial answer
  2. (2)actinoid metals
  3. (3)lanthanoid and actinoid metals
  4. (4)actinoid and transition metals

Official answer

Option 1

NTA final key (Sep 2020).

Chapter
The d- and f-Block Elements
Topic
f-Block Elements
Idea tested
Mischmetal Composition and Uses

Same topic in other shifts

All f-Block Elements questions
  1. 4 Apr 2026, Shift 1 · Q60The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce4+\mathrm{Ce^{4+}} and…HardOther
  2. 4 Apr 2026, Shift 2 · Q59Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number: Eu-63, Gd-64, Dy-66, Ho-67, Tm-69,…MediumOther
  3. 9 Apr 2024, Shift 1 · Q87Number of colourless lanthanoid ions among the following is ________. Eu3+,Lu3+,Nd3+,La3+,Sm3+\mathrm{Eu^{3+}, Lu^{3+}, Nd^{3+}, La^{3+}, Sm^{3+}}MediumNumerical value
  4. 6 Apr 2023, Shift 1 · Q70Strong reducing and oxidizing agents among the following, respectively, areMediumSingle correct
  5. 3 Aug 2021, Shift 2 · Q33The correct order of the basic character for the following metal hydroxides isMediumSingle correct
  6. 3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct

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 42 of the 174 JEE Main shifts held from 2017 to 2026.