Punjab 10th Class Chemistry Chapter 1 Chemical Equilibrium Punjab Boards 10th Class

• <<
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• >>

 

Question 1 of 10

Chemistry

1. Concentration of reactants and products at equilibrium remains unchanged if:

1.Pressure or volume of the system is not changed

2.Temperature of the reaction is not changed

3.All of the above are observed

4.Concentration of any reactant or product is not changed

Question 1 of 10

Question 2 of 10

2. What are the units for N₂(g) + O₂(g) ⇌ 2NO₂(g)

1.mol².dm⁻⁶

2.No units

3.mol.dm⁻³

4.dm³.mol⁻¹

Question 2 of 10

Question 3 of 10

3. 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.H₂ and I₂

2.H₂, I₂ and HI

3.HI only

4.H₂ only

Question 3 of 10

Question 4 of 10

4. Which of the following reaction will not have any units for Kc?

1.N₂(g) + O₂ ⇌ 2NO(g)

2.2A(g) + B(g) ⇌ 3AC (g)

3.H₂(g) + CO₂(g) ⇌ H₂O(g) + CO(g)

4.All of these

Question 4 of 10

Question 5 of 10

5. For which reaction, Kc has units of mol.dm⁻³.

1.PCl₅(g) ⇌ PCl₃(g) + Cl₅ (g)

2.2lCl (g) ⇌ l₂ (g) + Cl₂(g)

3.N₂(g) + 3H₂(g) ⇌ 2NO₃(g)

4.2NO₂(g) ⇌ N₂O₄(g)

Question 5 of 10

Question 6 of 10

6. In an irreversible reaction equilibrium is

1.Established quickly

2.Established when reaction stops

3.Never established

4.Established slowly

Question 6 of 10

Question 7 of 10

7. Which is true about the equilibrium state?

1.Both forward and reverse reactions stop

2.Both forward and reverse reactions continue at the same rate

3.The reverse reaction stops

4.The forward reaction stops

Question 7 of 10

Question 8 of 10

8. For a reversible reaction
Kc = [C]²/[A][B]
Which substance is product of the reaction?

1.C

2.A

3.B

4.Both a and b

Question 8 of 10

Question 9 of 10

9. Which of the following does not happen, when a system is at equilibrium state?

1.Forward and reverse reactions stop

2.Reaction continues to occur in both the directions

3.Concentration of reactants and products stop changing

4.Forward and reverse rates become equal

Question 9 of 10

Question 10 of 10

10. Active mass means

1.Total mass of products

2.Total mass of reactants and products

3.Total mass of reactants

4.Mass of substance in moles per dm³ in a dilute solution

Question 10 of 10

 Loading...

 

Other Related test

• Punjab 12th Class Urdu Phir Wataniyat Ki Taraf Mcqs Test Online
• Punjab 12th Class Chemistry Chapter 13 Carboxylic Acids Mcqs Test Online
• Punjab 9th Class Physics Model Paper 3 MCQs Test Online
• Punjab 9th Class Biology Chapter 6 Enzymes Mcqs Test Online
• Punjab 11th Class English Chapter 2 Clearing in the Sky Mcqs Test Online
• Punjab 12th Class English Good Bye Mr. Chips Chapter 8 MCQs Test Online
• Punjab 9th Class Chemistry Chapter 3 Periodic Table and Periodicity of Properties Mcqs Test Online
• Punjab 11th Class Urdu Zinda Shehar Murda Shehar Mcqs Test Online
• Punjab 12th Class English Good Bye Mr. Chips Chapter 17 MCQs Test Online
• Punjab 9th Class Math Chapter 5 Factorization Mcqs Test Online