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What Neco Sets In Chemistry And Hot Topics

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2021 NECO CHEMISTRY: What are the areas NECO will set Chemistry questions from and how do I get NECO Chemistry 2021 OBJ and theory questions answered correctly in the exam hall? NECO 2021 Chemistry Questions and how you can answer them correctly to get A1 is the topic we shall discuss today.

NECO CHEMISTRY QUESTIONS is compulsory for every NECO 2021 Science student. Continue reading for Sample Questions NECO would set in 2021 Chemistry or click here for NECO 2021 Chemistry Syllabus and hot topics to read.

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NECO 2021 Chemistry Questions And Answers

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You have asked the questions, what are the areas NECO sets questions in Chemistry? I am here to give you bold answers to your question.

To make this topic easy for you to understand, I will divide it into three sections. The three sections are:

  1. NECO 2021 Chemistry Objective Questions
  2. 2021 NECO Chemistry Theory Questions And Answers.
  3. Instructions To Pass NECO 2021 Examination.

Now that you are familiar with the various areas Chemistry NECO 2021/2021 questions will come from, the next thing is to know exactly what NECO will ask from these areas in 2021 NECO.

NECO 2021 Chemistry Objective Questions

As usual, you will be given questions and options A to D to choose from. Normally, the number of objective questions (OBJ) you are to answer in NECO 2021 Chemistry is 50.


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The Following Are Sample NECO Objective Questions. They are likely questions for NECO 2021.

1. Which of the following statements is NOT correct?
  • A. The average kinetic energy of a gas is directly proportional to its temperature
  • B. At constant tempearture, the volume of a gas increases as the pressure increases
  • C. The pressure of a gas is inversely proportional to its volume
  • D. The temperature of a gas is directly proportional to its volume
  • E. The collisions of molecules with each other are inelastic

2. An example of an alcohol is

  • A. CCl4
  • B. CH3COOH
  • C. CHCl3
  • D. C2H6
  • E. CH3OH
3. Zinc Oxide is a
  • A. Basic Oxide
  • B. Acidic Oxide
  • C. Amphoteric Oxide
  • D. Neutral Oxide
  • E. Reactive Oxide

4. The nucleus of an atom contains

  • A. protons only
  • B. neurons only
  • C. protons and electrons
  • D. neutrons and electrons
  • E. protons and neutrons

5. The normal boiling point of a liquid is defined as

  • A. the temperature at which its vapour pressure equals the atmospheric pressure
  • B. the temperature at which bubbles begin to form
  • C. the temperature at which the vapour pressure equals 1 temperature
  • D. the temperature at which the rate of condensation of vapour equals the rate of vaporisation of the liquid
  • E. the temperature at which the space above the liquid is saturated
6. The periodic classification of elements is an arrangement of the elements in order of their
  • A. Atomic Weights
  • B. Isotopic Weights
  • C. Molecular Weights
  • D. Atomic Numbers
  • E. Atomic Masses
7. A small quantity of solid ammonium chloride (NH4Cl) was heated gently in a test tube, the solid gradually disappears to produce two gases. Later, a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have undergone
  • A. distillation
  • B. sublimation
  • C. precipitation
  • D. evaporation
  • E. decomposition
8. Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,
  • A. P will form an electrovalent bond with R
  • B. Q will form a covalent bond with S
  • C. R will form an electrovalent bond with S
  • D. Q will form an electrovalent bond with S
  • E. Q will form a covalent bond with R
9. When air which contains the gases Oxygen, nitrogen, carbondioxide, water vapour and the rare gases, is passed through alkaline pyrogallol and then over quicklime, the only gases left are;
  • A. nitrogen and carbondioxide
  • B. the rare gases
  • C. nitrogen and oxygen
  • D. nitrogen and the rare gases
  • E. nitrogen, carbondioxide and the rare gases
10. When heat is absorbed during a chemical reaction, the reaction is said to be
  • A. thermodynamic
  • B. exothermic
  • C. isothermal
  • D. endothermic
  • E. thermostatic
11. During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment,
  • A. the litmus turns blue but no gas is evolved
  • B. the litmus turns blue and oxygen is evolved
  • C. the litmus turns blue and hydrogen is evolved
  • D. the litmus turns red and oxygen is evolved
  • E. the litmus turns red and then becomes colourless

12. A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may, therefore, be removed by

  • A. boiling the water
  • B. adding excess calcium hydroxide
  • C. adding a calculated amount of calcium hydroxide
  • D. adding sodium carbonate
  • E. adding magnesium hydroxide

Read Also: How to answer NECO questions very fast

Note: Last NECO Chemistry Object and Essay paper was on the 18th of June 2018.

Chemistry NECO 2021 Theory Questions And Answers

The following are the kind of questions you should expect in NECO 2021 Chemistry Theory or Essay. They are hot cake questions:



  1. What is transition element
  2. Why does iron exhibit variable oxidation state and paramagnetism
  3. State the differences between conductors and electrolytes
  4. What is saponification
  5. Differentiate between efflorescence, deliquescence and hygroscopy
  6. What is fermentation, write the equation for fermentation of glucose
  7. Define hybridization and explain how it is formed
  8. What is solubility
  9. What are the different electrolytic cells
  10. What is Acid, base and salt?



That’s all for now… I shall update you when more real live questions and answers come up. However, I advice that you are hardworking so as to pass your NECO once and for all.

Read Also: How to read and pass NECO in one day

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Comments

What Neco Sets In Chemistry And Hot Topics — 9 Comments

  2. Semiloore on said:

    Tanks,dis is wonderful

    Reply ↓
  3. Anonymous on said:

    I interested in this helpful advice

    Reply ↓
  4. isaac on said:

    wow i don pass bcoz am always reading

    Reply ↓
  5. HEEMU on said:

    Wow am already rd my book remain pray t0 almaity gd t0 fulfil our promise wish u all the best thank alone

    Reply ↓
  6. K. C on said:

    Wow I just started reading and am already feeling as if I am passing

    Reply ↓
  7. Solly on said:

    wow
    ur right
    am beging to enjoy chemistry
    tnx to u

    Reply ↓
  8. Muhammad on said:

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    Reply ↓

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