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Saturday, 31 October

JEE Main 2026 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 8 April 2026, Shift 2, Chemistry Q75

Question 75 of 75 in this shift, Chemistry question 25 of 25, Section B.

Solid carbon, CaO and CaCO3\mathrm{CaCO_3} are mixed and allowed to attain equilibrium at T K. CaCO3(s)⇌CaO(s)+CO2(g)\mathrm{CaCO_3(s)} \rightleftharpoons \mathrm{CaO(s)} + \mathrm{CO_2(g)} Kp1=0.08\quad \mathrm{Kp_1} = 0.08 atm C(s)+CO2(g)⇌2CO(g)\mathrm{C(s)} + \mathrm{CO_2(g)} \rightleftharpoons 2\mathrm{CO(g)} Kp2=2\quad \mathrm{Kp_2} = 2 atm The partial pressure of CO is ________ ×10−1\times 10^{-1} atm

Official answer

4

NTA final key.

Chapter
Equilibrium
Topic
Chemical Equilibrium
Idea tested
Heterogeneous Equilibrium

Same idea in other shifts

Asked 2× in all
  1. 27 Aug 2021, Shift 2 · Q57When 5.1 g of solid NH4HS\mathrm{NH_4HS} is introduced into a two litre evacuated flask at 27∘27^\circC, 20% of the solid decomposes into…MediumNumerical value

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.