My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
Previous year question hub

Chemical Equilibrium - Physical Chemistry - Chemistry Previous Year Questions

Practice Chemical Equilibrium - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

10Papers
10Years
12Questions
1Topics

Chemical Equilibrium question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Chemical Equilibrium. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 7 58.3%
Not classified 2 16.7%
Easy 2 16.7%
Hard 1 8.3%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 5 41.7%
Numerical Answer Type (NAT) 4 33.3%
MSQ 2 16.7%
Subjective 1 8.3%

Subject weightage

Top subjects by unique question coverage.

Chemistry
12 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
12 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Chemical Equilibrium
12 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE ADVANCED 2023 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2020 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2019 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2018 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2016 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2013 PAPER 2 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2008 PAPER 1 OFFLINE
1 Qs
IIT JEE 2006
2 Qs
IIT JEE 1999
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE ADVANCED 2023 PAPER 1 ONLINE20231View paper
JEE ADVANCED 2020 PAPER 1 OFFLINE20201View paper
JEE ADVANCED 2019 PAPER 1 OFFLINE20191View paper
JEE ADVANCED 2018 PAPER 1 OFFLINE20181View paper
JEE ADVANCED 2016 PAPER 2 OFFLINE20162View paper
JEE ADVANCED 2013 PAPER 2 OFFLINE20131View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2008 PAPER 1 OFFLINE20081View paper
IIT JEE 200620062View paper
IIT JEE 199919991View paper

All Chemical Equilibrium previous year questions

Practice every matching question in batches of 20, with every available option.

1
1999 · Chemistry · Physical Chemistry · Chemical Equilibrium
IIT JEE 1999
When 3.06 g of solid NH4HS is introduced into a two litre evacuated flask at 27o C, 30% of the solid decomposes into gaseous ammonia and hydrogen sulphide. (i) Kc and Kp for the reaction at 27o C (ii) What would happen to the equilibrium when more solid NH4HS is introduced into the flask?
Open complete paper
2
2006 · Chemistry · Physical Chemistry · Chemical Equilibrium
IIT JEE 2006

$$\begin{aligned} & \mathrm{Ag}^{+}+\mathrm{NH}_3 \quad\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+} \\ & k_1=3.5 \times 10^{-3} \\ & {\left[\mathrm{Ag}\left(\mathrm{NH}_3\right]^{+}+\mathrm{NH}_3 \quad\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}\right.} \end{aligned}$$

$k_2=1.7 \times 10^{-3}$, then the formation constant of $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}$ is :

Open complete paper
3
2006 · Chemistry · Physical Chemistry · Chemical Equilibrium
IIT JEE 2006

$$\mathrm{N}_2+3 \mathrm{H}_2 \to 2 \mathrm{NH}_3$$

Which is the correct statement if $\mathrm{N}_2$ is added at equilibrium condition?

Open complete paper
4
2008 · Chemistry · Physical Chemistry · Chemical Equilibrium
IIT JEE 2008 PAPER 1 OFFLINE

Statement 1 : For every chemical reaction at equilibrium, standard Gibbs energy of reaction is zero.

and

Statement 2 : At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy.

Open complete paper
5
2011 · Chemistry · Physical Chemistry · Chemical Equilibrium
IIT JEE 2011 PAPER 2 OFFLINE

The equilibrium

$$2C{u^+} \to Cu^\circ + C{u^{2+}}$$

In aqueous medium at 25\(^\circ\)C shifts towards the left in the presence of

Open complete paper
6
2013 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2013 PAPER 2 OFFLINE
The thermal dissociation equilibrium of CaCO3(s) is studied under different conditions

CaCO3(s) \(\leftrightharpoons\) CaO(s) + CO2(g).

For this equilibrium, the correct statement(s) is (are)
Open complete paper
7
2016 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2016 PAPER 2 OFFLINE
Paragraph
Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equations:
X2 (g) \(\leftrightharpoons\) 2X (g)
The standard reaction Gibbs energy, \(\Delta _rG^o\), of this reaction is positive. At the start of the reaction, there is one mole of X2 and no X. As the reaction proceeds, the number of moles of X formed is given by \(\beta\). Thus, \(\beta _{equilibrium}\) is the number of moles of X formed at equilibrium. The reaction is carried out at a constant total pressure of 2 bar. Consider the gases to behave ideally. (Given R = 0.083 L bar K-1 mol-1)
Question
The INCORRECT statement among the following for this reaction, is
Open complete paper
8
2016 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2016 PAPER 2 OFFLINE
Paragraph
Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equations:
X2 (g) \(\leftrightharpoons\) 2X (g)
The standard reaction Gibbs energy, \(\Delta _rG^o\), of this reaction is positive. At the start of the reaction, there is one mole of X2 and no X. As the reaction proceeds, the number of moles of X formed is given by \(\beta\). Thus, \(\beta _{equilibrium}\) is the number of moles of X formed at equilibrium. The reaction is carried out at a constant total pressure of 2 bar. Consider the gases to behave ideally. (Given R = 0.083 L bar K-1 mol-1)
Question
The equilibrium constant Kp for this reaction at 298 K, in terms of \(\beta _{equilibrium}\), is
Open complete paper
9
2018 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2018 PAPER 1 OFFLINE
A closed tank has two compartments \(A\) and \(B,\) both filled with oxygen (assumed to be ideal gas). The partition separating the two compartments is fixed and is a perfect heat insulator (Figure \(1.\)). If the old partition is replaced by a new partition which can slide and conduct heat but does NOT allow the gas to leak across (Figure \(2\)), the volume (in \({m^3}\)) of the compartment A after the system attains equilibrium is ______________.

JEE Advanced 2018 Paper 1 Offline Chemistry - Chemical Equilibrium Question 8 English
Open complete paper
10
2019 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2019 PAPER 1 OFFLINE
For the following reaction, the equilibrium constant Kc at 298 K is 1.6 \(\times\) 1017.

Fe2+(aq) + S2-(aq) ⇌ FeS(s)

When equal volumes of

0.06 M Fe2+(aq) and 0.2 M S2\(-\)(aq)

solutions are mixed, the equilibrium concentration of Fe2+(aq) is found by Y \(\times\) 10\(-\)17 M. The value of Y is .................
Open complete paper
11
2020 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2020 PAPER 1 OFFLINE
Consider the reaction,

A \(\rightleftharpoons\) B

at 1000 K. At time t', the temperature of the system was increased to 2000 K and the system was allowed to reach equilibrium. Throughout this experiment the partial pressure of A was maintained at 1 bar. Given, below is the plot of the partial pressure of B with time. What is the ratio of the standard Gibbs energy of the reaction at 1000 K to that at 2000 K?

JEE Advanced 2020 Paper 1 Offline Chemistry - Chemical Equilibrium Question 6 English
Open complete paper
12
2023 · Chemistry · Physical Chemistry · Chemical Equilibrium
JEE ADVANCED 2023 PAPER 1 ONLINE
The plot of $\log k_f$ versus $1 / T$ for a reversible reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons \mathrm{P}(\mathrm{g})$ is shown.

JEE Advanced 2023 Paper 1 Online Chemistry - Chemical Equilibrium Question 3 English
Pre-exponential factors for the forward and backward reactions are $10^{15} \mathrm{~s}^{-1}$ and $10^{11} \mathrm{~s}^{-1}$, respectively. If the value of $\log K$ for the reaction at $500 \mathrm{~K}$ is 6 , the value of $\left|\log k_b\right|$ at $250 \mathrm{~K}$ is ______.

$$\begin{aligned} & {[K=\text { equilibrium constant of the reaction }} \\\\ & k_f=\text { rate constant of forward reaction } \\\\ & \left.k_b=\text { rate constant of backward reaction }\right] \end{aligned}$$
Open complete paper