JEE MAINS PRACTICE · Chemistry

Chemical Equilibrium

285 practice questions for JEE Mains Practice99 easy · 83 medium · 103 hard. Every question is graded instantly with a step-by-step solution when you miss it.

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Sample questions

MCQ
For which of the following solids does solubility decrease with an increase in temperature?
MCQ
The vapour density of $\mathrm{N}_2 \mathrm{O}_4$ at a certain temperature is 30 . What is the percentage dissociation of $\mathrm{N}_2 \mathrm{O}_4$ at this temperature?
MCQ
In hydrolysis of a salt of weak acid and strong base, $A^{-}+\mathrm{H}_2 \mathrm{O} \rightleftharpoons \mathrm{HA}+\mathrm{OH}^{-}$, the hydrolysis constant $\left(K_h\right)$ is equal to
MCQ
Equivalent amounts of $\mathrm{H}_2$ and $\mathrm{I}_2$ are heated in a closed vessel till equilibrium is obtained. If $80 \%$ of the hydrogen can be converted to HI, the $K_C$ at this temperature is
MCQ
Equal moles of $\mathrm{NO}_2(g)$ and $\mathrm{NO}(g)$ are to be placed in a container to produce $\mathrm{N}_2 \mathrm{O}$ according, to the reaction, $\mathrm{NO}_2+\mathrm{NO} \rightleftharpoons \mathrm{~N}_2…
MCQ
The chemical reaction of a gas phase is given below. $2 A(g)+B(g) \rightleftharpoons C(g)+D(g)$ Which one of the following changes will affect the value of $K_c$ ?
Numerical
If $K_\rho$ for a reaction, $A(g)+2 B(g) \rightleftharpoons 3 C(g)+D(g)$ is 0.05 atm at 1000 K . Its $K_{\mathrm{c}}$ in term of $R$ is $\frac{x \times 10^{-5}}{R}$. The value of $x$ is ______
MCQ
For the chemical equilibrium, $2 \mathrm{NO}_2(\mathrm{~g}) \rightleftharpoons \mathrm{N}_2 \mathrm{O}_4(\mathrm{~g}) ;+14.6 \mathrm{kcal}$ increase in temperature
MCQ
The nitrite ion in represented by (I) $[\mathrm{O}-\mathrm{N}=O]^{-}$ (II) $[\mathrm{N}=\mathrm{O}-\mathrm{O}]^{-}$ Which of the structures represents possible resonance forms of this ion?
MCQ
The gas A2 in the left flask allowed to react with gas B2 present in right flask as,$\text{A}_{2}\left(\text{g}\right)+\text{B}_{2}\left(\text{g}\right)\rightleftharpoons\,2\text{AB}\left(\text{g}\right)$ ; Kc = 4 at…
MCQ
One of the reaction that takes place in producing steel from iron ore is the reduction of $\text{iron(II)}$ oxide by carbon monoxide to give iron metal and $\text{CO}_{\text{2}}.$…
MCQ
The equilibrium constant of the following isomerisation reaction at $\text{400}\text{K}$ and $\text{298}\text{K}$ are $\text{2}\text{.07}$ and $\text{3}\text{.42}$ respectively. Which of the following is/are correct? I.…
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