Chemistry 10 Chapter 9 MCQs Tests

In this post, we have prepared 3 MCQs tests of Federal Board Chemistry 10 Chapter 9 MCQs Tests. For more Class 10 Chemistry MCQs Tests visit this page.

Chemistry 10 Chapter 9 MCQs Tests

Practice MCQs Test No 1

2763

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 1

1 / 10

Active mass means:

Mass of substance in mole / dm³ in dilute solution

Total mass of reactants

Both A and B

Total mass of products

2 / 10

________ and _________ are main gases of the air.

Sulphur, Oxygen

Nitrogen, Hydrogen

Hydrogen, Oxygen

Nitrogen, Oxygen

3 / 10

Which of the following is not the macroscopic characteristic of forward reaction?

Products produce reactants

Rate is fastest in the beginning and gradually slows down

It is written from left to right

Reactants produce products

4 / 10

Concentration of reactants and products at equilibrium remains unchanged if:

Concentration of any reactant or product is not changed

Pressure or volume of the system is not changed

Temperature of the reaction is not changed

All of the above are observed

5 / 10

A double arrow (⇌) indicates:

Irreversible reaction

Forward reaction

Reversible reaction

Reverse reaction

6 / 10

Sulphuric acid is produced on the large scale by the process known as:

Direct Process

Haber process

Le Chatellier’s process

Contact process

7 / 10

When a mixture of H₂ and I₂ is sealed in a flask and temperature is kept at 25°C, following equilibrium is established.
H_{2 (g)} + I_{2 (g)} ⇌ 2HI _(g)

Which substance or substances will be present in the equilibrium mixture?

H₂ only

H₂, I₂ and HI

HI only

H₂ and I₂

8 / 10

Ammonia is produced by the reaction of nitrogen and hydrogen at 450 °C, 200 atm pressure in the presence of a catalyst. The process is known as:

Haber process

Le Chatellier’s process

Contact process

Direct Process

9 / 10

Which is true about the equilibrium state?

The forward reaction stops

Both forward and reverse reactions continue at the same rate

Both forward and reverse reactions stop

The reverse reaction stops

10 / 10

Which of the following catalysts is used to form NH₃ gas from Nitrogen and Hydrogen gas?

Pt

Fe

Fe₂O₃

FeO

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Practice MCQs Test No 2

1826

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 2

1 / 8

In an irreversible reaction, equilibrium is:

Established slowly

Established quickly

Never established

Established when reaction stops

2 / 8

What is the unit of equilibrium constant for N_{2 (g)} + 2O_{2 (g)} ⇌ 2NO_{2 (g)}?

mol² . dm^-6

mol . dm^-3

dm³ . mol^-1

No units

3 / 8

For a reversible reaction:
Kc = [C]² / [A][B]  .

The correct equation for above expression is:

A + B → 2C

2C ⇌ A + B

C ₂  ⇌ A + B

A + B ⇌ 2C

4 / 8

For a general reaction

2A + B ⇌ 2C + D.

The rate of forward reaction will be equal to:

K_f [A][B]

K_f [2A][B]

K_f [A]²[B]

K_f [A]²+[B]

5 / 8

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

2A _(g) + B _(g) ⇌ 3AC _(g)

2A _(g) + B _(g) ⇌ 3AC _(g)

All of these

H_{2 (g)} + CO_{2 (g)} ⇌ H₂O _(g) + CO _(g)

N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)

6 / 8

Sulphur Trioxide is prepared according to the following reaction:

2SO_{2 (g)} + O_{2 (g)} ⇌ 2SO_{3 (g)}

The condition of this reaction is:

Fe / 400 °C , 200 atm

V₂O₅ / 450 °C , 200 atm

Electric Spark

Ni / 450 °C , 200 atm

Fe / 400 °C , 200 atm

7 / 8

At equilibrium state of a reversible reaction:

Concentrations of reactants and products become equal

Forward and reverse reactions are stopped

Concentration of reactants and products become constant

Concentrations of the reactants become zero

8 / 8

What is the unit of equilibrium constant for N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)?

mol² . dm^-6

mol . dm^-3

No units

dm³ . mol^-1

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Full Chapter MCQs Quiz Test

2666

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Class 10 Chemistry
Chapter 9
MCQs Quiz Test

1 / 18

At equilibrium state of a reversible reaction:

Concentrations of reactants and products become equal

Concentrations of the reactants become zero

Forward and reverse reactions are stopped

Concentration of reactants and products become constant

2 / 18

Active mass means:

Mass of substance in mole / dm³ in dilute solution

Total mass of reactants

Total mass of products

Both A and B

3 / 18

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

2A _(g) + B _(g) ⇌ 3AC _(g)

2A _(g) + B _(g) ⇌ 3AC _(g)

All of these

H_{2 (g)} + CO_{2 (g)} ⇌ H₂O _(g) + CO _(g)

N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)

4 / 18

What is the unit of equilibrium constant for N_{2 (g)} + 2O_{2 (g)} ⇌ 2NO_{2 (g)}?

dm³ . mol^-1

mol² . dm^-6

No units

mol . dm^-3

5 / 18

In an irreversible reaction, equilibrium is:

Established slowly

Established quickly

Never established

Established when reaction stops

6 / 18

For a reversible reaction:
Kc = [C]² / [A][B]  .

The correct equation for above expression is:

2C ⇌ A + B

C ₂  ⇌ A + B

A + B ⇌ 2C

A + B → 2C

7 / 18

Ammonia is produced by the reaction of nitrogen and hydrogen at 450 °C, 200 atm pressure in the presence of a catalyst. The process is known as:

Haber process

Le Chatellier’s process

Direct Process

Contact process

8 / 18

________ and _________ are main gases of the air.

Nitrogen, Oxygen

Hydrogen, Oxygen

Nitrogen, Hydrogen

Sulphur, Oxygen

9 / 18

Sulphuric acid is produced on the large scale by the process known as:

Contact process

Direct Process

Le Chatellier’s process

Haber process

10 / 18

What is the unit of equilibrium constant for N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)?

mol² . dm^-6

dm³ . mol^-1

No units

mol . dm^-3

11 / 18

Which of the following is not the macroscopic characteristic of forward reaction?

Products produce reactants

It is written from left to right

Rate is fastest in the beginning and gradually slows down

Reactants produce products

12 / 18

For a general reaction

2A + B ⇌ 2C + D.

The rate of forward reaction will be equal to:

K_f [A]²[B]

K_f [A][B]

K_f [A]²+[B]

K_f [2A][B]

13 / 18

When a mixture of H₂ and I₂ is sealed in a flask and temperature is kept at 25°C, following equilibrium is established.
H_{2 (g)} + I_{2 (g)} ⇌ 2HI _(g)

Which substance or substances will be present in the equilibrium mixture?

HI only

H₂ only

H₂, I₂ and HI

H₂ and I₂

14 / 18

Concentration of reactants and products at equilibrium remains unchanged if:

Pressure or volume of the system is not changed

Concentration of any reactant or product is not changed

All of the above are observed

Temperature of the reaction is not changed

15 / 18

Sulphur Trioxide is prepared according to the following reaction:

2SO_{2 (g)} + O_{2 (g)} ⇌ 2SO_{3 (g)}

The condition of this reaction is:

Fe / 400 °C , 200 atm

Fe / 400 °C , 200 atm

Ni / 450 °C , 200 atm

Electric Spark

V₂O₅ / 450 °C , 200 atm

16 / 18

Which is true about the equilibrium state?

Both forward and reverse reactions continue at the same rate

The reverse reaction stops

The forward reaction stops

Both forward and reverse reactions stop

17 / 18

Which of the following catalysts is used to form NH₃ gas from Nitrogen and Hydrogen gas?

Fe₂O₃

Pt

FeO

Fe

18 / 18

A double arrow (⇌) indicates:

Irreversible reaction

Forward reaction

Reverse reaction

Reversible reaction

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