JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 3 August 2021, Shift 2, Chemistry Q33

Question 33 of 90 in this shift, Chemistry question 3 of 30, Section A.

The correct order of the basic character for the following metal hydroxides is

(1) $\mathrm{Al(OH)_3 > Ca(OH)_2 > Ce(OH)_3 > Lu(OH)_3}$
(2) $\mathrm{Ca(OH)_2 > Ce(OH)_3 > Al(OH)_3 > Lu(OH)_3}$
(3) $\mathrm{Ca(OH)_2 > Ce(OH)_3 > Lu(OH)_3 > Al(OH)_3}$ Official answer
(4) $\mathrm{Lu(OH)_3 > Al(OH)_3 > Ce(OH)_3 > Ca(OH)_2}$

Official answer

Option 3

NTA final key.

Chapter: The s-Block Elements
Topic: f-Block Elements
Idea tested: Basicity Trend of Lanthanide Hydroxides

Same topic in other shifts

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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.