Chemistry · 2026
JEE Main · 8 April 2026, Shift 2 · Q75
Solid carbon, CaO and CaCO_3 are mixed and allowed to attain equilibrium at T K. CaCO_3( s ) ⇌ CaO ( s )+ CO_2( g ), Kp_1=0.08 atm; C ( s )+ CO_2( g…
Solid carbon, CaO and $\displaystyle \mathrm{CaCO}_3$ are mixed and allowed to attain equilibrium at T K .
$$\begin{array}{ll}
\mathrm{CaCO}_3(\mathrm{~s}) \rightleftharpoons \mathrm{CaO}(\mathrm{~s})+\mathrm{CO}_2(\mathrm{~g}) & \mathrm{Kp}_1=0.08 \mathrm{~atm} \\
\mathrm{C}(\mathrm{~s})+\mathrm{CO}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{~g}) & \mathrm{Kp}_2=2 \mathrm{~atm}
\end{array}
$$
The partial pressure of CO is $\displaystyle \_\_\_\_$ $\displaystyle \times 10^{-1} \mathrm{~atm}$
Official answer
From NTA’s final answer key for this paper.
4
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.