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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumConceptual

JEE Main 24 February 2021, Shift 1, Chemistry Q59

Question 59 of 90 in this shift, Chemistry question 29 of 30, Section B.

Number of amphoteric compounds among the following is __________. (A) BeO (B) BaO (C) Be(OH)2\mathrm{Be(OH)_2} (D) Sr(OH)2\mathrm{Sr(OH)_2}

Official answer

2

NTA final key.

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Amphoterism of Beryllium Compounds

Same idea in other shifts

Asked 5× in all
  1. 13 Apr 2023, Shift 1 · Q67Be(OH)2\mathrm{Be(OH)_2} reacts with Sr(OH)2\mathrm{Sr(OH)_2} to yield an ionic salt. Choose the incorrect option related to this reaction from the…MediumSingle correct
  2. 27 Jul 2022, Shift 1 · Q69Given below are two statements. Statement I: The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents…MediumTwo statements
  3. 25 Jul 2021, Shift 1 · Q36Given below are two statements : Statement I : None of the alkaline earth metal hydroxides dissolve in alkali. Statement II : Solubility…MediumTwo statements
  4. 4 Sep 2020, Shift 2 · Q33An alkaline earth metal 'M' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and…EasySingle 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 108 of the 174 JEE Main shifts held from 2017 to 2026.