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Equilibrium

Previous year questions with solutions · 2000 – 2026

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104Questions
36Papers covered
4.44%Weightage 2026▼ 33.3% vs last year
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Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20264224.44% ▼ 33.3% vs last year
20253136.67% ▲ 11.1% vs last year
20246236.00% ▲ 53% vs last year
20232123.92% ▼ 20.8% vs last year
2022522.54.95% ▲ 147.5% vs last year
20211112.00% ▼ 55% vs last year
20202124.44% ▼ 33.3% vs last year
20193136.67% same as last year
20183136.67% same as last year
20173136.67% ▲ 20% vs last year
2016522.55.56% same as last year
2015522.55.56% ▼ 37.5% vs last year
20144148.89% ▲ 31.9% vs last year
20136236.74% ▲ 7.9% vs last year
2012522.56.25% ▲ 1.3% vs last year
2011522.56.17% ▼ 1.2% vs last year
2010522.56.25% ▼ 20.3% vs last year
20094147.84% ▼ 33.3% vs last year
200861611.76% ▲ 47.1% vs last year
20074148.00% ▲ 33.3% vs last year
20063136.00% same as last year
20053136.00% ▲ 44% vs last year
20042124.17% ▼ 31.9% vs last year
20033136.12% ▼ 23.5% vs last year
20024148.00% ▲ 2% vs last year
20014147.84% same as last year
20004147.84%

⚠ 1 of these questions are out of the current syllabus (marked on the question).

104 questions · newest paper first · page 4 of 4

Ques. 91AIPMT 2003

The reaction quotient (Q) for the reaction N2(g) + 3H2(g) 2NH3(g) is given by Q = [NH3]2[N2][H2]3. The reaction will proceed from right to left if

  1. Q = Kc
  2. Q < Kc
  3. Q > Kc
  4. Q = 0
Ques. 92AIPMT 2003

The solubility product of AgI at 25 C is 1.0 10-16 mol2 L-2. The solubility of AgI in 10-4 N solution of KI at 25 C is approximately (in mol L-1)

  1. 1.0 10-16
  2. 1.0 10-12
  3. 1.0 10-10
  4. 1.0 10-8
Ques. 93AIPMT 2002

Reaction BaO2(s) BaO(s) + O2(g); H = +ve. In equilibrium condition, pressure of O2 depends on

  1. increase mass of BaO2
  2. increase mass of BaO
  3. increase temperature on equilibrium
  4. increase mass of BaO2 and BaO both
Ques. 94AIPMT 2002

Solubility of MX2 type electrolytes is 0.5 10-4 mole/lit., then find out Ksp of electrolytes.

  1. 5 10-12
  2. 25 10-10
  3. 1 10-13
  4. 5 10-13
Ques. 95AIPMT 2002

Which has highest pH?

  1. CH3COOK
  2. Na2CO3
  3. NH4Cl
  4. NaNO3
Ques. 96AIPMT 2002

Solution of 0.1 N NH4OH and 0.1 N NH4Cl has pH 9.25. Then find out pKb of NH4OH

  1. 9.25
  2. 4.75
  3. 3.75
  4. 8.25
Ques. 97AIPMT 2001

In HS-, I-, R-NH2, NH3 order of proton accepting tendency will be

  1. I- > NH3 > R-NH2 > HS-
  2. NH3 > R-NH2 > HS- > I-
  3. R-NH2 > NH3 > HS- > I-
  4. HS- > R-NH2 > NH3 > I-
Ques. 98AIPMT 2001

Ionisation constant of CH3COOH is 1.7 10-5 and concentration of H+ ions is 3.4 10-4. Then find out initial concentration of CH3COOH molecules.

  1. 3.4 10-4
  2. 3.4 10-3
  3. 6.8 10-4
  4. 6.8 10-3
Ques. 99AIPMT 2001

Solubility of M2S salt is 3.5 10-6 then find out solubility product.

  1. 1.7 10-6
  2. 1.7 10-16
  3. 1.7 10-18
  4. 1.7 10-12
Ques. 100AIPMT 2001

Correct relation between dissociation constants of a dibasic acid is

  1. Ka1 = Ka2
  2. Ka1 > Ka2
  3. Ka1 < Ka2
  4. Ka1 = 1 Ka2
Ques. 101AIPMT 2000

For any reversible reaction, if we increase concentration of the reactants, then effect on equilibrium constant

  1. depends on amount of concentration
  2. unchanged
  3. decrease
  4. increase
Ques. 102AIPMT 2000

Conjugate acid of NH2- is

  1. NH4OH
  2. NH4+
  3. NH2-
  4. NH3
Ques. 103AIPMT 2000

Which statement is wrong about pH and H+?

  1. pH of neutral water is not zero.
  2. Adding 1 N solution of CH3COOH and 1 N solution of NaOH, pH will be seven.
  3. [H+] of dilute and hot H2SO4 is more than concentrated and cold H2SO4
  4. Mixing solution of CH3COOH and HCl. pH will be less than 7.
Ques. 104AIPMT 2000

Equilibrium constant Kp for following reaction MgCO3(s) MgO(s) + CO2(g)

  1. Kp = PCO2
  2. Kp = PCO2 PCO2 PMgOPMgCO3
  3. Kp = PCO2 + PMgOPMgCO3
  4. Kp = PMgCO3PCO2 + PMgO