4 Topics You Should Read In Chemistry That JAMB Frequently Ask Questions From

The Joint Adminstration And Matriculation Board Computer Based Test is a test that is conducted yearly to select brilliant and smart students in Nigeria. The body organized its mock examination on June 3rd, 2021 to expose candidates who opted in for the mock examination to learn how to use a computer write a test so that they will be used to it in order not to be swallowed by fear on the day of their main examination. As a normal tradition, JAMB release syllabus every year in all the subjects offered in Nigeria, but the bitter truth is that not every student will be able to cover the entire syllabus and that is why I will be listing out five (5) topics you should read in Chemistry that JAMB frequently ask questions from:

1. Organic Chemistry

Before the Computer Based Test, JAMB always bring 3-4 questions from Organic Chemistry which is often appears between question 46-50. You are yet to prepare for JAMB CBT if you have not read Organic Chemistry. Below are the things you need to know in this topic: a. Differences between hydrocarbon and non-hydrocarbon.

b. Alkane, Alkene and Alkyne Family: Nature of their covalent bond, bond angle, hybridization, preparation, properties and uses.

c. Alkanols and Benzene: Know the classes of alkanols, which are primary, secondary and tertiary and the types of alkanols which are monohydric, dihydric and trihydric. Also know the August Kekule resonance and hybrid structure of benzene and other benzene derivatives like phenol, toluene. d. Functional Groups of organic compounds, formation of esters and ethers.

2. Chemical Reaction

You are also expected to know the types of chemical reactions which are: Redox reaction, displacement reaction, decomposition reaction, double decomposition reaction, catalytic reaction, combination reaction. In redox reaction, the following aspects should be studied:

a. Defining oxidation and reduction reaction in terms of oxygen, electrons, hydrogen, oxidation number.

b. Identifying oxidizing and reducing agent in a redox reaction.

c. Calculating the oxidation number of an element in a compound.

d. Knowing the oxidation state of oxygen in a peroxide and hydrogen in a hydride.

3. Chemical Bonding JAMB candidates are expected to know that various kinds of chemical bonds in a compound, which at: Electrovalent and covalent bonds, metallic bond, hydrogen bond, dipole-dipole interaction and vanderwaals forces. Candidates should also know the role of electronegativity in the formation of electrovalent and covalent bonds: when the electronegativity difference is large, the elements making up the compound will most likely form an electrovalent or ionic bond. 4. Electrode, Electrochemical Cells And Electrolysis Candidates should know the difference between anode and cathode in an electrochemical and electrolytic cell. The electrodes for the various electrochemical cells (Daniel cell, lead acid accumulator, leclanche cell) should also be studied. Candidates are also expected to know how to calculate the mass of an element deposited during electrolysis and the volume of gases (oxygen, hydrogen, chlorine) liberated during electrolysis. These four topics are one of those JAMB frequently ask questions from, if you know of any, kindly drop it in the comment section so that others can learn too.