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Friday, 9 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listHardRecall

JEE Main 29 June 2022, Shift 1, Chemistry Q69

Question 69 of 90 in this shift, Chemistry question 9 of 30, Section A.

Match 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 (III) 780.0 (IV) 455.5 Choose the most appropriate answer from the options given below :
  1. (1)(A)-(I), (B)-(II), (C)-(III), (D)-(IV)Official answer
  2. (2)(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
  3. (3)(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
  4. (4)(A)-(IV), (B)-(II), (C)-(I), (D)-(III)

Official answer

Option 1

NTA final key (2022 Session 1).

Idea tested
Flame Coloration

Same idea in other shifts

Asked 3× in all
  1. 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
  2. 30 Jan 2024, Shift 2 · Q90Number of metal ions characterized by flame test among the following is ________.…MediumNumerical value

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.