Punjab 10th Class Chemistry Chapter 1 Chemical Equilibrium Mcqs Test Online Punjab 10th Class Chemistry Chapter 1 Chemical Equilibrium Punjab Boards 10th Class 12345678910 Question 1 of 10Chemistry 1. Which is true about the equilibrium state? 1.The forward reaction stops 2.Both forward and reverse reactions stop 3.The reverse reaction stops 4.Both forward and reverse reactions continue at the same rateQuestion 1 of 10Question 2 of 10 2. In an irreversible reaction equilibrium is 1.Established when reaction stops 2.Established quickly 3.Never established 4.Established slowly Question 2 of 10Question 3 of 10 3. Active mass means 1.Mass of substance in moles per dm³ in a dilute solution2.Total mass of reactants and products 3.Total mass of products 4.Total mass of reactants Question 3 of 10Question 4 of 10 4. For which reaction, Kc has units of mol.dm⁻³. 1.2NO₂(g) ⇌ N₂O₄(g) 2.N₂(g) + 3H₂(g) ⇌ 2NO₃(g) 3.2lCl (g) ⇌ l₂ (g) + Cl₂(g)4.PCl₅(g) ⇌ PCl₃(g) + Cl₅ (g) Question 4 of 10Question 5 of 10 5. Concentration of reactants and products at equilibrium remains unchanged if: 1.Pressure or volume of the system is not changed 2.Concentration of any reactant or product is not changed 3.Temperature of the reaction is not changed 4.All of the above are observedQuestion 5 of 10Question 6 of 10 6. What are the units for N₂(g) + O₂(g) ⇌ 2NO₂(g) 1.mol².dm⁻⁶ 2.dm³.mol⁻¹ 3.mol.dm⁻³ 4.No unitsQuestion 6 of 10Question 7 of 10 7. For a reversible reaction Kc = [C]²/[A][B] Which substance is product of the reaction? 1.A 2.B 3.Both a and b 4.C Question 7 of 10Question 8 of 10 8. Which of the following does not happen, when a system is at equilibrium state? 1.Forward and reverse reactions stop 2.Forward and reverse rates become equal 3.Reaction continues to occur in both the directions4.Concentration of reactants and products stop changing Question 8 of 10Question 9 of 10 9. When a mixture of H₂ and I₂ is sealed in a flask and temperature is kept at 20°C, following equilibrium is established. H₂(g) + I₂(g) ⇌ 2HI(g)Which substance or substances will be present in the equilibrium mixture?1.HI only 2.H₂, I₂ and HI 3.H₂ only 4.H₂ and I₂ Question 9 of 10Question 10 of 10 10. Which of the following reaction will not have any units for Kc? 1.N₂(g) + O₂ ⇌ 2NO(g) 2.All of these3.2A(g) + B(g) ⇌ 3AC (g) 4.H₂(g) + CO₂(g) ⇌ H₂O(g) + CO(g) Question 10 of 10 Loading... Test By Subject Punjab Test By Topics 10th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.