Reactions and Rate of Reaction MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Reactions and Rate of Reaction, a fundamental topic in the field of Chemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Reactions and Rate of Reaction MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Reactions and Rate of Reaction mcq questions that explore various aspects of Reactions and Rate of Reaction problems. Each MCQ is crafted to challenge your understanding of Reactions and Rate of Reaction principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Chemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Reactions and Rate of Reaction MCQs are your pathway to success in mastering this essential Chemistry topic.

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Reactions and Rate of Reaction MCQs | Page 21 of 35

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Q201.
According to collision theory, the reaction speeds up when a frequency of reaction

a.

decreases

b.

increases

c.

constant

d.

equilibrium

Discuss
Answer: (b).increases
Q202.
If particles have enough energy to react and change themselves into product particles, it makes possible

a.

effective collision only

b.

successful collision only

c.

unsuccessful collision

d.

effective and successful collision

Discuss
Answer: (d).effective and successful collision
Q203.
The rate of reaction is the change in the number of reactants or products in specific

a.

volume

b.

density

c.

time

d.

area

Discuss
Answer: (c).time
Q204.
Collision theory helps to explain the effects of

a.

concentration

b.

temperature

c.

surface area

d.

all of above

Discuss
Answer: (d).all of above
Q205.
Collision theory states that particles must collide with each other in the correct orientation and sufficient energy to

a.

attract

b.

repel

c.

react

d.

respond

Discuss
Answer: (c).react
Q206.
The alternative mechanism by which particles react possesses a lower

a.

activation energy

b.

chemical energy

c.

speed

d.

reaction

Discuss
Answer: (a).activation energy
Q207.
The activation energy of particular reaction is the minimum energy that is must for

a.

reaction

b.

collision

c.

absorption

d.

reduction

Discuss
Answer: (b).collision
Q208.
Some particles collide but bounce back afterward it is called

a.

successful collision

b.

unsuccessful collision

c.

successful reaction

d.

unsuccessful reaction

Discuss
Answer: (b).unsuccessful collision
Q209.
The condition of Mg in which it reacts violently with water is

a.

Mg(s) while cold

b.

Mg(s) when heated

c.

Mg(s) at normal temperature

d.

none of above

Discuss
Answer: (b).Mg(s) when heated
Q210.
If heated Mg(s) is allowed to react with H₂O(l), the product formed other than H₂(g) will be

a.

MgO(s)

b.

MgO(aq)

c.

Mg(OH)₂ (aq)

d.

Mg₂O₃(s)

Discuss
Answer: (a).MgO(s)
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