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Chemistry - Chemical Equilibrium

Practise 87 NTA Abhyas (JEE Main) questions on Chemical Equilibrium. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Chemical Equilibrium has been asked in 0 of the 25 years of NTA Abhyas (JEE Main) papers analysed (2002–2026), with 87 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2026, with 0 questions that year. In the last three years (2024–2026) it had 0 questions across 49 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1The equilibrium, N H 4 H S ( s ) ⇌ N H 3 ( g ) + H 2 S ( g ) , is followed to set-up at 127 ° C in a closed vessel. The total pressure at eq
  2. 2Equilibrium constant K C for the following reaction at 800 K is, 4 N H 3 ( g ) ⇌ 1 2 N 2 ( g ) + 3 2 H 2 ( g ) The value of K P for the foll
  3. 3The equilibrium constant of the following isomerisation reaction at 400 K and 298 K are 2 .07 and 3 .42 respectively. Which of the following
  4. 4For the reaction, N 2 O 4 g ⇌ 2 N O 2 g the degree of dissociation at equilibrium is 0.4 at a pressure of 1 atm. The value of K p is
  5. 5The degree of dissociation of P C l 5 ( g ) for the equilibrium P C l 5 g ⇌ P C l 3 g + C l 2 ( g ) is approximately related to the pressure
  6. 6At a definite temperature, the equilibrium constant for a reaction, A + B ⇌ 2 C , was found to be 81. Starting with 1 mole A and 1 mole B, t
  7. 7Consider the following reactions in which all the reactants and the products are in gaseous state. 2PQ ⇌ P 2 + Q 2 ; K 1 = 3.6 × 1 0 5 PQ +
  8. 8The solubilities of AgBr in water, in 0 .01 M CaBr 2 , 0 .01 M KBr and in 0 .05 M AgNO 3 are S 1 ,S 2 ,S 3 and S 4 respectively. Then the or
  9. 920% of N 2 O 4 molecules are dissociated in a sample of gas at 27 ° C and 760 torr. Mixture has the density at equilibrium equal to
  10. 10Ammonium carbonate decomposes as N H 2 C O O N H 4 s ⇌ 2 N H 3 g + C O 2 ( g ) For the reaction, K p = 2.9 × 10 - 5 a t m 3 . If we start wi
  11. 11The equilibrium constants at 298 K for a reaction A + B ⇌ C + D is 100. If the initial concentration of all the four species were 1 M each,
  12. 12For the equilibrium L i C l . 3 N H 3 ( s ) ⇌ L i C l . N H 3 ( s ) + 2 N H 3 ( g ) ; K P = 9 a t m 2 at 310 K. A 5 L vessel contains 0.1 mo
  13. 13K 1 and K 2 are the respective equilibrium constant for the reactions (i) X e F 6 ( g ) + H 2 O ( g ) ⇌ X e O F 4 ( g ) + 2 H F ( g ) ; K 1
  14. 14Initially, 0.8 mol of P C l 5 and 0.2 mol of P C l 3 are mixed in a one litre vessel. At equilibrium, 0.4 mol of P C l 3 is present. The val
  15. 15The equilibrium Cu 0 + Cu II ⇌ 2Cu I In aqueous medium at 25oC shifts towards the left in the presence of (1) C l - (2) C N - (3) SC N - (4)
  16. 16For A + B ⇌ C + D , if initially the concentration of A and B are equal but at equilibrium concentration of D will be twice of that of A the
  17. 17At 273 K and one atm, ‘ a ’ litre of N 2 O 4 decomposes to N O 2 as : N 2 O 4 g ⇌ 2 N O 2 g . To what extent has the decomposition proceeded
  18. 18The equilibrium constant for the reaction H 2 O g + C O g ⇌ H 2 g + C O 2 g is 0.44 at 1260 K. The equilibrium constant for the reaction 2 H
  19. 19N H 4 H S ( s ) ⇌ N H 3 ( g ) + H 2 S ( g ) The equilibrium pressure at 25°C is 0.660 atm. What is K p for the reaction?
  20. 20500 mL of 0.150 M AgNO 3 solution were added in 500 mL of 1.09 M Fe 2 + solution and the reaction is allowed to reach an equilibrium at 2 5
  21. 21For the reaction 2 H I ( g ) ⇌ H 2 ( g ) + I 2 ( g ) . The value of K c is 4. If 2 mol of H 2 , 2 mol of I 2 and 2 mol of HI are present in
  22. 22For the reaction, 2 A g + B g ⇌ C g + D g ; K c = 1 0 1 2 . If the initial moles of A, B, C and D are 2 , 1 , 7 and 3 moles respectively in
  23. 23For a reaction A → B, E a = 10 kJ/mol, ΔH = 5 kJ/mol . Thus potential energy profile for this reaction is
  24. 24The degree of dissociation is 0.4 at 420 K and 1.0 atm for the gaseous reaction P C l 5 g ⟶ P C l 3 g + C l 2 ( g ) . Assuming ideal behavio
  25. 25Which is correct relationship between K p and K c for following reversible reaction at 10 K temperature? K p and K c in units of atm and M r
  26. 26The ionisation constant for N H 4 + in water is 5.0 × 1 0 - 10 at 25 o C .The rate constant for the reaction of N H 4 + and O H - to form N
  27. 27For the following gases equilibrium, N 2 O 4 g ⇌ 2 N O 2 g K P is found to be equal to K C . This is attained when temperature is
  28. 28For the homogenous reaction, 4NH 3 (g) + 5O 2 (g) ⇌ 4NO(g) + 6H 2 O(g) the equilibrium constant K c has the units
  29. 29Equilibrium constant for the reaction 4 A ( g ) ⇌ B ( g ) + 2 C ( g ) is – Given: 2 A g ⇌ B g + Y g ; k c 1 = 8 C g ⇌ A g + 1 2 Y g ; k c 2
  30. 30The initial concentration of X and Y were 2 and 4 mole/L respectively. For the following equilibrium X + 2 Y ⇌ Z which of the following rela
  31. 31For the following three reactions I, II and III, equilibrium constants are given 1. CO g + H 2 O g ⇌ CO 2 g + H 2 g ; K 1 2. CH 4 g + H 2 O
  32. 32The degree of dissociation ' α ' of the reaction N 2 O 4 g ⇌ 2 N O 2 g Can be related to K p as [Given: Total pressure at equilibrium = P)
  33. 33For the reaction a + b ⇌ c + d , initially concentrations of a and b are equal and at equilibrium the concentration of d will be twice of th
  34. 34For the equilibrium A B ( g ) ⇌ A ( g ) + B ( g ) , at a given temperature 1 3 r d of AB is dissociated then P K p will be numerically equal
  35. 35If Δ G ° [ H I ( g ) = - 1.7 k J ] , the equilibrium constant for the reaction 2 H I ( g ) ⇌ H 2 ( g ) + I 2 ( g ) at 25 ° C is
  36. 36At high temperature, the following reaction occurs 4 C u O s ⇌ 2 C u 2 O s + O 2 g Consider the following statements regarding reaction 1 .
  37. 37For the reaction N 2 O 4 ⇌ 2 N O 2 g , the degree of dissociation of N 2 O 4 is 0.2 at 1 a t m . Then the K p of 2 N O 2 ⇌ N 2 O 4 is
  38. 38PCl 5 vapour decomposes on heating according to the reaction: PCl 5 g ⇌ PCl 3 g + Cl 2 g The density of a sample of a partially dissociated
  39. 39The dissociation equilibrium of a gas AB 2 can be represented as, 2 AB 2 (g) ⇌ 2 AB(g) + B 2 (g) The degree of dissociation is x and is smal
  40. 40At 800 ° C , the following equilibrium is established as F 2 g ⇌ 2 F g The composition of equilibrium may be determined by measuring the rat
  41. 41Which of the following lines correctly show the temperature dependence of equilibrium constant K, for an exothermic reaction?
  42. 42Equilibrium constant K p for the reaction CaCO 3 ⇌ CaO + CO 2 is 0.82 atm at 7 2 7 ∘ C. If 1 mole of CaCO 3 is placed in a closed container
  43. 43What is the role of a catalyst in a reversible reactions?
  44. 44Consider the following gaseous equilibria with equilibrium constants K 1 a n d K 2 respectively. S O 2 g + 1 2 O 2 ( g ) ⇌ S O 3 ( g ) 2 S O
  45. 45In the esterification C 2 H 5 O H l + C H 3 C O O H l ⇌ C H 3 C O O C 2 H 5 l + H 2 O l an equimolar mixture of alcohol and acid taken initi
  46. 46Initially 3 moles of ' A ' was taken in a 1 L container. The approx. moles of A left in the container when the following equilibrium establi
  47. 47Plot of log (x/m) against log P is a straight line inclined at an angle 45 o . When the pressure is 0.5 atm and Freundich parameter k is 10,
  48. 48K p for the reaction P C l 5 g ⇌ P C l 3 g + C l 2 g at 250 o C is 0 .82 . Calculate the degree of dissociation at given temperature under a
  49. 49The gas A 2 in the left flask allowed to react with gas B 2 present in right flask as, A 2 g + B 2 g ⇌ 2 AB g ; K c = 4 at 27 o C. What is t
  50. 50Hydrogen peroxide (H 2 O 2 ) decomposes according to the equation 2 H 2 O 2 ⇌ 2 H 2 O I + O 2 g From the following data at 2 5 ∘ C calculate

Frequently Asked Questions

1.How many questions are available for Chemical Equilibrium?

This chapter includes 87 NTA Abhyas (JEE Main) questions.

2.Are these questions only from NTA Abhyas (JEE Main), or from other exams too?

These are NTA Abhyas (JEE Main) questions specifically for the Chemical Equilibrium chapter. Questions from other exams like JEE Main or JEE Advanced are organised separately under their respective exam sections.

3.What is the difficulty level of Chemical Equilibrium questions in NTA Abhyas (JEE Main)?

Of the 87 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2026 had the most, with 0 questions.

4.Which topics in Chemical Equilibrium should I focus on?

All of this chapter's questions come from a single topic: Uncategorized.