Preguntas de Chemistry | JAMB CBT PRACTICE 2025 | Page 35

In this section you will find thousands of questions of Chemistry, how to solve each of the questions and the correct answer.

You will have four options in each question, try to answer correctly and if you don't, you will have the option to see the solution or choose another answer.

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Question 171

In the diagram above, X is the

A)  

enthalpy

B)  

enthalpy change

C)  

activation energy 

D)  

activated complex 

How to solve?

Question 172

The condition required for corrosion to take place is the presence of

A)  

water and carbon (IV) oxide

B)  

water, carbon (IV) oxide and oxygen

C)  

oxygen and carbon (IV) oxide

D)  

water and oxygen

How to solve?

Question 173

\(\mathrm{CH_4(g) + Cl_2(g) \rightarrow CH_3Cl_{(s)} + HCl_{(g)}}\)

The major factor that influence the rate of the reaction above is

A)  

catalyst

B)  

temperature

C)  

concentration

D)  

light

How to solve?

Question 174

The function of zinc electrode in a galvanic cell is that it

A)  

undergoes reduction

B)  

serves as the positive electrode

C)  

production electrons

D)  

uses up electrons 

How to solve?

Question 175

A chemical reaction which the hydration energy is greater than the lattice energy is referred to as

A)  

a spontaneous reaction

B)  

an endothermic reaction

C)  

an exothermic reaction

D)  

a reversible reaction

How to solve?

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