2022 NECO Chemistry Questions and Answers Essay & Objective

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2022 NECO Chemistry Questions and Answers for SS3 school candidates. Are you among those looking for how to get Chemistry NECO questions 2022? If yes, search no more because this article is for you. We will discuss how to get NECO Chemistry Essay and Objective correct questions and answers, how to answer Chemistry NECO questions 2022, and the steps you need to pass the NECO Chemistry exam in a sitting.

You’re about to write the 2022 NECO Chemistry exam and you want to make sure that you are prepared for it. But how do you know what will be on the NECO Chemistry exam? That’s why we created this article so that you can find all of the NECO Chemistry 2022 questions and answers right here!

NECO 2022 Chemistry Objective Answers:


NECO 2022 Chemistry Essay Answers:

A molar solution of a compound contains one mole or the molar mass of the compound in one dm³ of the solution.

(i) Identification of gases
(ii) Identification of acidic and metallic radicals

(i) Purification of bauxite
(ii) Electrolysis of alumina


This is because of the presence of copper which is a transition metal

(i) Methanamide is a liquid while the rest amides are crystalline solids
(ii) Melting points and boiling points of aides are much higher than expected.

(i) Heavy chemicals are produced in very large quantities in industries While fine chemicals are produced in small quantities for specific purposes
(ii) Heavy chemicals are in a crude state While fine chemicals are purified.

(i) Million’s reagent
(ii) Feeling’s solution

Graham’s law of diffusion states that at a constant temperature and pressure the rate of diffusion of a gas is inversely proportional to the square root of its density.

RO₂/RCH₄ = √(MCH₄/MO₂)
5/(200/t) = √[(12+4)/(16×2)]
5t/200 = √16/32
t/40 = 1/√2
t = 40/√2
t = (40/√2) × (√2/√2)
t = 20√2 seconds
Time taken = 28.28 seconds.

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In this article, we explore how you can get 2022 NECO Chemistry questions so that you can be well-prepared for your upcoming NECO exam, and also understand how NECO set Chemistry questions and how to answer them. With this guide, you can make A or B on Chemistry NECO 2022 exam.

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Let’s get started with what NECO Chemistry 2022 will look like.

What is NECO Chemistry?

The questions are grouped by topic, and each question includes a brief description and an example. The topics include atomic structure, chemical bonding, chemical reactions, and more.

Example Questions on NECO Chemistry

If you’re preparing for the 2022 NECO Chemistry exam, you might wonder what questions you can expect to see on the test. To help you study, we’ve compiled a list of example questions similar to those found on the NECO Chemistry exam.

  1. What is the name given to the process of natural selection?

  2. What is the name given to the change in an organism’s environment that leads to natural selection?

  3. How does natural selection work?

  4. What are the properties of acids and bases?

  5. What is the difference between a solution and a suspension?

  6. How can you determine the concentration of a solution?

Chemistry consists of two (2) parts which are Essay and Objective parts. These two parts are also known as Paper 1 and Paper 2.

Paper 1 of NECO Chemistry Questions 2022 will contain 50 objective questions to answer. This objective question has options A, B, C, and D. In which one option is the correct answer for each question. The next is Paper 2.

Paper 2 of 2022 Chemistry NECO has essay questions with instructions.

NECO Chemistry Questions and Answers 2022

Below are sample Chemistry NECO questions and answers for 2022.

1. What are the units for measurement of the amount of substance?

2. What is the difference between a cation and an anion?

Answers to NECO 2022 Chemistry Question 2

Anions have negative electrical charges while cations have positive electrical charges. Second, during electrolysis, anions move to the positive electrode called the anode. However, the cations migrate to the negative electrode called the cathode. Another difference between the two ions is that anions have more electrons than protons while the cations have more protons than electrons.

This is how to answer 2022 NECO Chemistry question 2 above. If you answer it this way, you are likely to get the full mark meant for it.

3. What is the electron configuration of an atom in its ground state?

4. How do atoms bond with one another to form molecules?

In atomic bonds, the interaction of the outer electrons (valence electrons) of the electron shells of the atoms involved plays the main role. The atoms form at least one pair of electrons between themselves. This pair of electrons holds two atoms together, so it is bonding and is called a bonding pair of electrons. In addition to a bonding electron pair (single bond), two (double bond) or three (triple bond) electron pairs can also act. An atomic bond has a specific direction of action, i.e. it is a directional bond and thus determines the geometric structure of a compound. The strength of a bond is determined by the binding energy described. 

This how to answer 2022 NECO Chemistry question 4 above. If you answer it this way, you are likely to get the full mark meant for it.

5. What are the properties of acids and bases?

This how to answer the 2022 NECO Chemistry question 5 above. If you answer it this way, you are likely to get the full mark meant for it.

6. What is the difference between microevolution and macroevolution?

In microevolution, fairly minor changes in a particular gene occur in a relatively short period. This is measurable and therefore verifiable. In macroevolution, there are major changes over several millennia that cannot be measured but can still be verified by fossils.

7. What is the role of mutations in evolution?

8. What are the units of measurement for density?

9. What is the difference between an ionic compound and a covalent compound?

Next are NECO Chemistry Objective Questions for 2022.

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NECO Chemistry Objective Questions

Below are sample questions for NECO Chemistry for the ss3 students exam.

 1.    Which of the following scientists formulated the law of conversation of mass?

A:    A. Lavoisier

B:    J. Dalton

C:    R. Boyle

D:    J. Proust

2.    Charcoal is used in the decolorization of sugar because of its

A:    absorption property

B:    amorphous property

C:    oxidizing property

D:    adsorption property

3.     Electropositivity of elements across the periodic table normally

A:    remains constant down the group.

B:    increases across the period.

C:    decreases across the period.

D:    decreases down the period.

How to get NECO Chemistry 2022 questions before the exam

If you want to get NECO Chemistry 2022 questions before the exam, you can do a few things. First, check with your teachers and classmates to see if anyone has a copy of the questions. If not, you can try searching online for previous years’ questions. Finally, remember to study hard and stay focused in the weeks leading up to the exam to be prepared for whatever questions come your way.

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