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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 25 July 2021, Shift 2, Chemistry Q37

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

Match List I with List II : List - I Elements (a) Li (b) Na (c) K (d) Cs List - II Properties (i) Poor water solubility of I−\mathrm{I^{-}} salt (ii) Most abundant element in cell fluid (iii) Bicarbonate salt used in fire extinguisher (iv) Carbonate salt decomposes easily on heating Choose the correct answer from the options given below :
  1. (1)(a) - (iv), (b) - (ii), (c) - (iii), (d) - (i)
  2. (2)(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)Official answer
  3. (3)(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
  4. (4)(a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)

Official answer

Option 2

NTA final key.

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Existence of Solid Bicarbonates

Same topic in other shifts

All s-Block Elements questions
  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
  3. 31 Jan 2024, Shift 2 · Q63Which of the following is least ionic?MediumSingle correct
  4. 6 Apr 2023, Shift 1 · Q67The standard electrode potential of M+/M\mathrm{M^+/M} in aqueous solution does not depend onMediumSingle correct
  5. 6 Apr 2023, Shift 1 · Q68The setting time of Cement is increased by addingEasySingle correct
  6. 6 Apr 2023, Shift 2 · Q66Structures of BeCl2\mathrm{BeCl_2} in solid state, vapour phase and at very high temperature respectively are:MediumSingle 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.