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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyData or graph

JEE Main 3 August 2021, Shift 1, Chemistry Q57

Question 57 of 90 in this shift, Chemistry question 27 of 30, Section B.

The following results have been obtained during the kinetic studies of the reaction. A + 2B ⟶ 2C Experiment | [A], mol L−1\mathrm{L^{-1}} | [B], mol L−1\mathrm{L^{-1}} | Initial rate of formation of [C], mol L−1\mathrm{L^{-1}} min−1\mathrm{min^{-1}} 1 | 0.60 | 0.60 | 0.20 2 | 0.60 | 1.20 | 0.80 3 | 1.20 | 0.60 | 0.40 The order of the reaction with respect to B is ________.

The figure, in words

Table with columns Experiment, [A], [B], Initial rate of formation of [C]; three rows as given in the stem.

Official answer

2

NTA final key.

Chapter
Chemical Kinetics
Topic
Rate Laws
Idea tested
Initial Rates Method

Same idea in other shifts

Asked 9× in all
  1. 5 Apr 2024, Shift 1 · Q85During Kinetic study of reaction 2A+B→C+D2\mathrm{A} + \mathrm{B} \rightarrow \mathrm{C} + \mathrm{D}, the following results were obtained : A…MediumNumerical valueHas a figure
  2. 27 Jan 2024, Shift 1 · Q87Consider the following data for the given reaction 2 HI(g)→H2(g)+I2(g)\mathrm{2\ HI_{(g)} \rightarrow H_{2(g)} + I_{2(g)}} | 1 | 2 | 3…EasyNumerical value
  3. 11 Apr 2023, Shift 2 · Q63For a chemical reaction A + B →\to Product, the order is 1 with respect to A and B. | Rate mol L−1 S−1\mathrm{mol\ L^{-1}\ S^{-1}} | [A]…MediumSingle correctHas a figure
  4. 27 Jul 2022, Shift 1 · Q822NO+2H2→N2+2H2O\mathrm{2NO + 2H_2 \rightarrow N_2 + 2H_2O} The above reaction has been studied at 800∘800^\circC. The related data are given in the table…EasyNumerical value
  5. 29 Jul 2022, Shift 1 · Q87The reaction between X and Y is first order with respect to X and zero order with respect to Y. Experiment | [X] mol L−1\mathrm{mol\ L^{-1}} |…MediumNumerical valueHas a figure
  6. 26 Aug 2021, Shift 1 · Q56The following data was obtained for chemical reaction given below at 975 K.…EasyNumerical value
  7. 18 Mar 2021, Shift 1 · Q572 NO(g)+Cl2(g)⇌2 NOCl(s)\mathrm{2\,NO(g) + Cl_2(g) \rightleftharpoons 2\,NOCl(s)} This reaction was studied at −10-10°C and the following data was obtained run |…MediumNumerical value
  8. 2 Sep 2020, Shift 2 · Q26The results given in the below table were obtained during kinetic studies of the following reaction :…MediumSingle correctHas a figure

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.