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

\mathrm{CaCO_3}

are mixed and allowed to attain equilibrium at T K.

\mathrm{CaCO_3(s)} \rightleftharpoons \mathrm{CaO(s)} + \mathrm{CO_2(g)}

\quad \mathrm{Kp_1} = 0.08

atm

\mathrm{C(s)} + \mathrm{CO_2(g)} \rightleftharpoons 2\mathrm{CO(g)}

\quad \mathrm{Kp_2} = 2

atm The partial pressure of CO is ________

\times 10^{-1}

atm

Official answer

NTA final key.

Chapter: Equilibrium
Topic: Chemical Equilibrium
Idea tested: Heterogeneous Equilibrium

Same topic in other shifts

All Chemical Equilibrium questions

4 Apr 2026, Shift 1 · Q55At T(K), the equilibrium constant of $\mathrm{A_2}(g)+\mathrm{B_2}(g)\rightleftharpoons \mathrm{C}(g)$ is $2.7\times10^{-5}$ . What is the…EasySingle correct
5 Apr 2026, Shift 1 · Q74The values of pressure equilibrium constant recorded at different temperatures for the following equilibrium reaction have been given…MediumNumerical value
5 Apr 2026, Shift 2 · Q56The reaction $\mathrm{A(g)\rightleftharpoons B(g)+C(g)}$ was initiated with the amount 'a' of A(g). At equilibrium it is found that the…MediumSingle correct
6 Apr 2026, Shift 1 · Q57One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium.…MediumSingle correct
6 Apr 2026, Shift 2 · Q74In a closed flask at 600 K, one mole of $\mathrm{X_2Y_4(g)}$ attains equilibrium as given below :…MediumNumerical value
2 Apr 2025, Shift 1 · Q73Consider the following equilibrium, $\mathrm{CO(g)+2H_2(g)\rightleftharpoons CH_3OH(g)}$ 0.1 mol of CO along with a catalyst is present in…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 42 of the 174 JEE Main shifts held from 2017 to 2026.