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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 13 April 2023, Shift 2, Chemistry Q75

Question 75 of 90 in this shift, Chemistry question 15 of 30, Section A.

Match List I with List II 1 - Bromopropane is reacted with reagents in List I to give product in List II LIST I - Reagent | LIST II - Product A. KOH (alc) | I. Nitrile B. KCN (alc) | II. Ester C. AgNO2\mathrm{AgNO_2} | III. Alkene D. H3CCOOAg\mathrm{H_3CCOOAg} | IV. Nitroalkane Choose the correct answer from the options given below:
  1. (1)A-IV, B-III, C-II, D-I
  2. (2)A-III, B-I, C-IV, D-IIOfficial answer
  3. (3)A-I, B-III, C-IV, D-II
  4. (4)A-I, B-II, C-III, D-IV

Official answer

Option 2

NTA final key.

Chapter
Haloalkanes and Haloarenes
Topic
SN1 and SN2 Mechanisms
Idea tested
Ambident Nucleophiles (Cyanide/Nitrite)

Same idea in other shifts

Asked 4× in all
  1. 9 Apr 2024, Shift 2 · Q75[figure: C6H5−CH(CH3)−CH(OCH3)−Br\mathrm{C_6H_5-CH(CH_3)-CH(OCH_3)-Br} (benzylic carbon bearing CH3_3, next carbon bearing both OCH3_3 and Br)]…HardSingle correctHas a figure
  2. 17 Mar 2021, Shift 2 · Q43The correct pair(s) of the ambident nucleophiles is (are) : (A) AgCN/KCN\mathrm{AgCN/KCN} (B) RCOOAg/RCOOK\mathrm{RCOOAg/RCOOK} (C)…MediumOther
  3. 18 Mar 2021, Shift 2 · Q42Given below are two statements : Statement I : C2H5OH\mathrm{C_2H_5OH} and AgCN both can generate nucleophile. Statement II : KCN and AgCN…MediumTwo statements

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.