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Saturday, 31 October

JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumConceptual

JEE Main 11 April 2023, Shift 2, Chemistry Q87

Question 87 of 90 in this shift, Chemistry question 27 of 30, Section B.

The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is ________ A. The catalyst is diffused over the surface of reactants. B. Reactants are adsorbed on the surface of the catalyst. C. Occurrence of chemical reaction on the catalyst’s surface through formation of an intermediate. D. It is a combination of intermediate compound formation theory and the old adsorption theory. E. It explains the action of the catalyst as well as those of catalytic promoters and poisons.

Official answer

3

NTA final key.

Same idea in other shifts

Asked 2× in all
  1. 26 Jul 2022, Shift 1 · Q62Match List - I with List - II. List - I (Processes/Reactions) (A) 2SO2(g)+O2(g)→2SO3(g)2\mathrm{SO_2(g)} + \mathrm{O_2(g)} \rightarrow 2\mathrm{SO_3(g)} (B)…EasyMatch 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.