JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 June 2022, Shift 2, Chemistry Q66

Question 66 of 90 in this shift, Chemistry question 6 of 30, Section A.

s-block element which **cannot** be qualitatively confirmed by the flame test is

(1)Li
(2)Na
(3)Rb
(4)BeOfficial answer

Official answer

Option 4

NTA final key.

Chapter: The s-Block Elements
Topic: s-Block Elements
Idea tested: Flame Coloration

Same idea in other shifts

Asked 7× in all

6 Apr 2024, Shift 2 · Q66Match List - I with List - II. List - I (Alkali Metal) (A) Li (B) Na (C) Rb (D) Cs List - II (Emission Wavelength in nm) (I) 589.2 (II)…HardMatch the list
30 Jan 2024, Shift 2 · Q90Number of metal ions characterized by flame test among the following is ________.…MediumNumerical value
15 Apr 2023, Shift 1 · Q67Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R : Assertion (A) : $\mathrm{BeCl_2}$ …EasyAssertion–reason
29 Jun 2022, Shift 1 · Q69Match List - I with List - II. List - I (Metal) (A) Li (B) Na (C) Rb (D) Cs List - II (Emitted light wavelength (nm)) (I) 670.8 (II) 589.2…HardMatch the list
4 Aug 2021, Shift 1 · Q50Match List I with List II List I (Metal salt) List II (Colour to the flame) A. $\mathrm{Cu^{2+}}$ I. Brick Red B. $\mathrm{Sr^{2+}}$ II.…EasyMatch the list
24 Feb 2021, Shift 2 · Q37Match List - I with List - II. List - I (Salt) | List - II (Flame colour wavelength) (a) LiCl | (i) 455.5 nm (b) NaCl | (ii) 670.8 nm (c)…MediumMatch the list

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.