WBJEE SERIES Chemistry
Equilibrium
12 previous year questions.
Volume: 12 Ques
Yield: Medium
High-Yield Trend
1
2023 1
2017 2
2012 2
2011 2
2010 3
2009 1
2008 Chapter Questions 12 MCQs
01
PYQ 2008
medium
chemistry ID: wbjee-20
Addition of sodium acetate to acetic acid will cause
1
increase in pH
2
decrease in pH
3
no change in pH
4
change in pH that cannot be predicted
02
PYQ 2009
medium
chemistry ID: wbjee-20
The equilibrium constant (K) of a reaction may be written as :
1
2
3
4
03
PYQ 2009
medium
chemistry ID: wbjee-20
Which of the following will decrease the of a solution of ?
1
addition of 5 ml of 1 M HCl
2
addition of 50 ml of 0.01 M HCl
3
addition of 50 ml of 0.002 M HCl
4
addition of Mg
04
PYQ 2009
medium
chemistry ID: wbjee-20
For the reaction if we write then x becomes
1
-1
2
3
4
1
05
PYQ 2010
medium
chemistry ID: wbjee-20
and each of volume are mixed and the volume is made up to by adding of solution. The of the resulting mixture is
1
1.17
2
10
3
0.3
4
06
PYQ 2010
medium
chemistry ID: wbjee-20
Calculate for the reversible process given below if and
1
1.95
2
1.85
3
1.89
4
1.6
07
PYQ 2011
medium
chemistry ID: wbjee-20
The pH of an aqueous solution of of concentrated is given by
1
2
3
4
08
PYQ 2011
medium
chemistry ID: wbjee-20
If the equilibrium constants of the following equilibria are given by and respectively, which of the following relations is correct
1
2
3
4
09
PYQ 2012
medium
chemistry ID: wbjee-20
In a reversible chemical reaction at equilibrium, if the concentration of any one of the reactants is doubled, then the equilibrium constant will
1
also be doubled
2
be halved
3
remains the same
4
becomes one-fourth
10
PYQ 2012
medium
chemistry ID: wbjee-20
acetic acid is mixed with solution of . The of the resulting solution is of acetic acid is )
1
3.74
2
4.74
3
5.74
4
6.74
11
PYQ 2017
medium
chemistry ID: wbjee-20
Dissolving in de-ionized water will result in a solution having
1
pH < 7
2
pH = 7
3
pOH = 7
4
pH > 7
12
PYQ 2023
medium
chemistry ID: wbjee-20
Which of the following mixtures act(s) as a buffer solution?
1
NaOH+CH3COOH (1:1 mole ratio)
2
NH4OH+HCl (2:1 mole ratio)
3
CH3COOH+NaOH (2:1 mole ratio)
4
CH3COOH+NaOH (1:2 mole ratio)
About Equilibrium - WBJEE
Equilibrium is a vital chapter for WBJEE aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Equilibrium PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Equilibrium carry the most weight. Then, tackle the questions iteratively to solidify your understanding.