JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 17 March 2021, Shift 1, Chemistry Q31

Question 31 of 90 in this shift, Chemistry question 1 of 30, Section A.

A central atom in a molecule has two lone pairs of electrons and forms three single bonds. The shape of this molecule is :

(1)planar triangular
(2)T-shapedOfficial answer
(3)see-saw
(4)trigonal pyramidal

Official answer

Option 2

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: VSEPR Theory
Idea tested: T-Shaped Geometry (SN=5, 2 LP)

Same idea in other shifts

Asked 3× in all

27 Jun 2022, Shift 1 · Q62Based upon VSEPR theory, match the shape (geometry) of the molecules in List-I with the molecules in List - II and select the most…EasyMatch the list
29 Jun 2022, Shift 2 · Q70Number of lone pair(s) of electrons on central atom and the shape of $\mathrm{BrF_3}$ molecule respectively, areEasySingle 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.