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

458

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 1

1 / 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:

Le Chatellier’s process

Haber process

Direct Process

Contact process

2 / 10

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

Haber process

Contact process

Direct Process

Le Chatellier’s process

3 / 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, I₂ and HI

H₂ and I₂

H₂ only

HI only

4 / 10

________ and _________ are main gases of the air.

Nitrogen, Hydrogen

Nitrogen, Oxygen

Sulphur, Oxygen

Hydrogen, Oxygen

5 / 10

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

It is written from left to right

Rate is fastest in the beginning and gradually slows down

Products produce reactants

Reactants produce products

6 / 10

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

FeO

Pt

Fe₂O₃

Fe

7 / 10

Which is true about the equilibrium state?

Both forward and reverse reactions continue at the same rate

The reverse reaction stops

Both forward and reverse reactions stop

The forward reaction stops

8 / 10

Concentration of reactants and products at equilibrium remains unchanged if:

Concentration of any reactant or product is not changed

Temperature of the reaction is not changed

All of the above are observed

Pressure or volume of the system is not changed

9 / 10

A double arrow (⇌) indicates:

Irreversible reaction

Reverse reaction

Forward reaction

Reversible reaction

10 / 10

Active mass means:

Total mass of reactants

Total mass of products

Mass of substance in mole / dm³ in dilute solution

Both A and B

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Practice MCQs Test No 2

278

Class 10 Chemistry
Chapter 9
Practice MCQs Test No 2

1 / 8

For a general reaction

2A + B ⇌ 2C + D.

The rate of forward reaction will be equal to:

K_f [A][B]

K_f [A]²[B]

K_f [A]²+[B]

K_f [2A][B]

2 / 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

Ni / 450 °C , 200 atm

V₂O₅ / 450 °C , 200 atm

Electric Spark

Fe / 400 °C , 200 atm

3 / 8

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

dm³ . mol^-1

mol² . dm^-6

No units

mol . dm^-3

4 / 8

At equilibrium state of a reversible reaction:

Forward and reverse reactions are stopped

Concentration of reactants and products become constant

Concentrations of reactants and products become equal

Concentrations of the reactants become zero

5 / 8

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

mol . dm^-3

mol² . dm^-6

dm³ . mol^-1

No units

6 / 8

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

2A _(g) + B _(g) ⇌ 3AC _(g)

All of these

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

2A _(g) + B _(g) ⇌ 3AC _(g)

N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)

7 / 8

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

The correct equation for above expression is:

2C ⇌ A + B

A + B ⇌ 2C

C ₂  ⇌ A + B

A + B → 2C

8 / 8

In an irreversible reaction, equilibrium is:

Established when reaction stops

Established slowly

Established quickly

Never established

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Full Chapter MCQs Quiz Test

356

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Class 10 Chemistry
Chapter 9
MCQs Quiz Test

1 / 18

At equilibrium state of a reversible reaction:

Forward and reverse reactions are stopped

Concentration of reactants and products become constant

Concentrations of the reactants become zero

Concentrations of reactants and products become equal

2 / 18

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

Direct Process

Contact process

Le Chatellier’s process

Haber process

3 / 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?

H₂, I₂ and HI

H₂ and I₂

HI only

H₂ only

4 / 18

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

FeO

Pt

Fe

Fe₂O₃

5 / 18

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

6 / 18

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

7 / 18

In an irreversible reaction, equilibrium is:

Established quickly

Never established

Established slowly

Established when reaction stops

8 / 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

Direct Process

Contact process

Le Chatellier’s process

9 / 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

V₂O₅ / 450 °C , 200 atm

Fe / 400 °C , 200 atm

Electric Spark

Ni / 450 °C , 200 atm

10 / 18

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

dm³ . mol^-1

No units

mol² . dm^-6

mol . dm^-3

11 / 18

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

2A _(g) + B _(g) ⇌ 3AC _(g)

All of these

N_{2 (g)} + O_{2 (g)} ⇌ 2NO _(g)

2A _(g) + B _(g) ⇌ 3AC _(g)

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

12 / 18

A double arrow (⇌) indicates:

Forward reaction

Reverse reaction

Reversible reaction

Irreversible reaction

13 / 18

________ and _________ are main gases of the air.

Nitrogen, Oxygen

Sulphur, Oxygen

Nitrogen, Hydrogen

Hydrogen, Oxygen

14 / 18

Concentration of reactants and products at equilibrium remains unchanged if:

Temperature of the reaction is not changed

Pressure or volume of the system is not changed

Concentration of any reactant or product is not changed

All of the above are observed

15 / 18

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

It is written from left to right

Rate is fastest in the beginning and gradually slows down

Reactants produce products

Products produce reactants

16 / 18

Active mass means:

Mass of substance in mole / dm³ in dilute solution

Both A and B

Total mass of products

Total mass of reactants

17 / 18

For a general reaction

2A + B ⇌ 2C + D.

The rate of forward reaction will be equal to:

K_f [2A][B]

K_f [A]²+[B]

K_f [A][B]

K_f [A]²[B]

18 / 18

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

The correct equation for above expression is:

A + B ⇌ 2C

C ₂  ⇌ A + B

2C ⇌ A + B

A + B → 2C

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