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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 5 April 2024, Shift 2, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is Tl > In > Ga > Al > B. (B) Down the group 13 electronegativity decreases from top to bottom. (C) Al dissolves in dil. HCl and liberates H2\mathrm{H_2} but conc. HNO3\mathrm{HNO_3} renders Al passive by forming a protective oxide layer on the surface. (D) All elements of group 13 exhibits highly stable +1 oxidation state. (E) Hybridisation of Al in [Al(H2O)6]3+\mathrm{[Al(H_2O)_6]^{3+}} ion is sp3d2\mathrm{sp^3d^2}. Choose the correct answer from the options given below :
  1. (1)(A) and (C) only
  2. (2)(C) and (E) onlyOfficial answer
  3. (3)(A), (B), (C) and (E) only
  4. (4)(A), (C) and (E) only

Official answer

Option 2

NTA final key.

Chapter
The p-Block Elements
Topic
Group 13 & 14
Idea tested
Group 13 Ionization Energy Trend

Same idea in other shifts

Asked 6× in all
  1. 6 Apr 2026, Shift 1 · Q59Given below are two statements: Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of…MediumTwo statements
  2. 3 Apr 2025, Shift 2 · Q60The correct orders among the following are A. Atomic radius : B < Al < Ga < In < Tl B. Electronegativity : Al < Ga < In < Tl < B C.…MediumOther
  3. 4 Apr 2025, Shift 2 · Q57The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively :EasySingle correct
  4. 4 Apr 2025, Shift 2 · Q58Given below are two statements : Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the corresponding…MediumTwo statements
  5. 9 Apr 2024, Shift 2 · Q68Match List I with List II List I | List II A. Melting Point [K] | I. Tl>In>Ga>Al>B\mathrm{Tl>In>Ga>Al>B} B. Ionic Radius [M+3\mathrm{M^{+3}}/pm] | II.…HardMatch 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.