Skip to content

ExamBridge.online

Browse Worksheets
Classes
- Grade 9
- Grade 10
- Grade 11
- Grade 12
Aptitude Tests

Browse Worksheets
Classes
- Grade 9
- Grade 10
- Grade 11
- Grade 12
Aptitude Tests

Browse Worksheets
Classes
- Grade 9
- Grade 10
- Grade 11
- Grade 12
Aptitude Tests

Browse Worksheets
Classes
- Grade 9
- Grade 10
- Grade 11
- Grade 12
Aptitude Tests

ECAT MDCAT : Chemistry chapter 6 CHEMICAL EQUILIBRUM

Leave a Comment / By Afshan JAMAL / August 15, 2026

Welcome to your ECAT MDCAT : Chemistry chapter 6 CHEMICAL EQUILIBRUM

Which of the following in an example of reversible reaction

Choose the correct option.

None

When rate of forward reaction is equal to rate of backward reaction, then the equilibrium established is called

Choose the correct option.

Chemical equilibrium

Static equilibrium

Dynamic equilibrium

None of these

None

Question Image

Choose the correct option.

4 mole per dm³

2 mole per dm³

0.33 mole per dm³

0.67 mole per dm³

None

The concentration of reactants is increased by x, then equilibrium constant K becomes

Choose the correct option.

In K/x

K/x

K+ x

K

None

I a chemical reaction equilibrium is said to have been established when :

Choose the correct option.

Rate of opposing reactions are equal.

Rate constants of opposing reactions are equal.

Opposing reactions stop.

Concentration of reactants and products are equal

None

Le-chatlier's principle is applied on the reversible reaction in order to

Choose the correct option.

Determine the rate of reaction

Predict the direction of reaction

Determine the extent of reaction

Find best conditions for favorable shifting the position of equilibrium

None

Which of the following favours the reverse reaction in chemical equilibrium?

Choose the correct option.

Increasing the concentration of the reactant

Removal of the least one of the products at regular intervals

Increasing the concentration of one or more of the products

None of these

None

Question Image

Choose the correct option.

Decrease in temperature favour more dissolution of the salt

Increase in temperature favour more dissolution of the salt

Lowering pressure favour more dissolution of the salt

Increasing pressure favour more dissolution of the salt

None

Extent to H₂ + I₂ → 2HI can be increased by:

Choose the correct option.

Increasing temperature.

Increasing product.

Increasing pressure.

Adding a catalyst.

None

Question Image

Choose the correct option.

Total pressure

Amount of A₂ and B₂

Temperature

Catalyst

None

For what value of Kc, almost forward reaction is complete:

Choose the correct option.

Kc = 10³⁰

Kc = 10⁻³⁰

Kc = 0

Kc = 1

None

Question Image

Choose the correct option.

Initial concentration of acetic acid

Initial concentration of ethyl acetate

Equilibrium concentration of acetic acid

Equilibrium concentration of ethyl acetate

None

Question Image

Choose the correct option.

Low pressure

High pressure

High temperature

High concentration of SO₂

None

Question Image

Choose the correct option.

Equal volumes of N₂ and H₂ are reacting

Equal masses of N₂ and H₂ are reacting

The reaction has stopped

The same amount of ammonia is formed as is decomposed into N₂ and H₂

None

Question Image

Choose the correct option.

0.02

0.2

50

25

None

The ph of 10⁻³ mole dm⁻³ of an aqueous solution of H₂SO₄ is:

Choose the correct option.

3.0

2.7

2.0

1.5

None

Which one of the following is not a buffer

Choose the correct option.

H₂CO₃ + NaHCO₃ solution

H₃PO₄ + NaH₂PO₄ solution

HI + NaI solution

NH₄OH + NH₄Cl solution

None

Question Image

Choose the correct option.

1

10

5

0.33

None

Which one of the following is a buffer

Choose the correct option.

HCl + NaCl solution

CH₃COOH + CH₃COONH₄ solution

H₂SO₄ + CaSO₄ solution

CH₃COOH + CH₃COONa

None

Whenever a week base is dissolved in water, it give its conjugate acid. similarly a weak acid in water produces its conjugate base. This conjugate acid-base pair concept is stated by

Choose the correct option.

Law of mass action

Le-charlier's principle

Common ion effect

Lowery Bronsted concept

None

Previous Start Quiz Next

Time's up

ExamBridge

Practice your MCQs with ExamBridge for Board Exams and University Entry Tests

Facebook-f Twitter

Platform

Board Exams MCQs
Entry Tests
Study Blog

Support

Help Center
Contact Us
Privacy Policy

Scroll to Top