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JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 26 February 2021, Shift 2, Chemistry Q37

Question 37 of 90 in this shift, Chemistry question 7 of 30, Section A.

Which pair of oxides is acidic in nature ?

(1) $\mathrm{B_2O_3}$ , $\mathrm{SiO_2}$ Official answer
(2) $\mathrm{B_2O_3}$ , CaO
(3) $\mathrm{N_2O}$ , BaO
(4)CaO, $\mathrm{SiO_2}$

Official answer

Option 1

NTA final key.

Chapter: The p-Block Elements
Topic: Group 13 & 14
Idea tested: Acid-Base Nature of Group 13 Oxides

Same idea in other shifts

Asked 2× in all

6 Apr 2023, Shift 2 · Q68Group-13 elements react with $\mathrm{O_2}$ in amorphous form to form oxides of type $\mathrm{M_2O_3}$ (M = element). Which among the…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.