NECO SSCE CHEMISTRY OBJECTIVE 2023 PAST QUESTION

NECO SSCE CHEMISTRY OBJECTIVE 2023 PAST QUESTION
NECO SSCE CHEMISTRY OBJECTIVE 2023 PAST QUESTION


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About NECO SSCE

Full meaning of NECO SSCE

N - National
E - Examinations
CO - Council
S - Senior
S - School
C - Certificate
E - Examination

What is NECO SSCE

The National Examinations Council (NECO) Senior School Certificate Examination (SSCE) examination is done by students who just finished senior secondary school. It was the first federal body in Nigeria to provide academic candidates with discounted registration and it was ordered to assume the National Board of Education Measurement's duties (NBEM). The Senior Secondary Certificate Examination and the General Certificate in Education are conducted by National Examinations Council (NECO) every June/July and December/January of the year, respectively.

For more information, you can visit the NECO official website

How to check NECO SSCE Result

To check your NECO SSCE result, check the easy steps given in this post where we explained in detail step by step how you can check your NECO result online. Click here to check easy steps to check NECO result online

About CHEMISTRY

   Chemistry is a science subject that researches elements and compounds' properties, compositions, and structures, as well as the way they can change and the energy that is released or absorbed during those changes.

   Chemistry is one of the important subjects you have to pass as a science student. Remember for you to pass NECO, you have to treat essential topics. Chemistry has a lot of definitions that differ as a result of the source but know that every definition still has the same meaning or passes the same information. 

   Some of the world's great Chemist are Marie Curie, Dmitri Mendeleev, John Dalton, Amedeo Avogadro, Alfred Noble, Robert Boyle, Ernest Rutherford, William Ramsay, Alice Ball, Harold Urey, Rosalind Franklin, Mario Molina, Louis Pasteur.

Important Topics In CHEMISTRY

So here are the important topics in the Chemistry needed to pass NECO:

  • Stoichiometry
  • Laws of definite and multiple proportions
  • Law of conservation of matter
  • Gay Lussac’s law of combining volumes, Avogadro’s law
  • Chemical symbols
  • Formulae, equations and their uses
  • Relative atomic mass
  • The mole concept and Avogadro’s number
  • Chemical combination
  • Kinetic theory of matter and Gas Laws
  • Melting
  • Vapourization
  • Boiling
  • Freezing
  • Solubility
  • Environmental Pollution
  • Acid, Bases and Salts
  • Oxidation and Reduction
  • Electrolysis
  • Chemistry and Industry
  • Metals and their compounds
  • Nitrogen,
  • Energy changes
  • Organic Chemistry
  • Chemical Equilibrium
  • Chemical Thermodynamics
  • Chemical Bonds

Importance of Past Questions

Past questions are important in your studies to help you have an insight of how the exam looks like and how to face questions related to different topics covered in the subject examination to be taken

Excerpts From NECO SSCE CHEMISTRY OBJECTIVE 2023 Past Questions


1. Which of the following is not a monobasic acid ? 
    A. Ethanoic acid 
    B. Hydrochloric acid 
    C. Hydrofluoric acid 
    D. Tetraoxosulphate(VI) acid 
    E. Trioxonitrate(V) acid 

2.  A sodium atom and a sodium ion have the same ?
    A. chemical properties. 
    B. electric charges. 
    C. electronic structures. 
    D. number of electrons. 
    E. number of neutrons. 

3. The element X with electronic configuration Is22s2 2p63s2 3p6 belongs to group ?
    A. 0
    B. II
    C. III
    D. V
    E. VI

4. Consider the reaction represented by the equation: Zn^ + 2HC1        —> ZnCl2 (iq) + H2 (g) 
What volume of hydrogen in dm3 would be produced at s.t.p. when 2.60 g of zinc reacts with excess hydrochloric acid? [H =1, Cl = 35.5, Zn = 65, molar volume of a gas at s.t.p. = 22.4 dm ] 
    A. 0.26 
    B. 0.49 
    C. 0.68 
    D. 0.90 
    E. 0.95 

5. When steam is passed over white hot coke at 1000°C. the product obtained is ?
    A. carbon (II) oxide and hydrogen. 
    B. carbon (IV) oxide and hydrogen. 
    C. carbon (II) oxide and nitrogen. 
    D. hydrogen and trioxocarbonate(IV). 
    E. hydrogen, oxygen and carbon(IV)oxide. 

6. When chlorine gas is bubbled into water and the yellowish green coloured solution formed is exposed     to sunlight for a while, the solution ?
    A.  decomposes and gives out hydrogen, oxygen and chlorine gas. 
    B.  will give out chlorine and hydrogen chloride gas. 
    C.  will give out chlorine gas and oxygen. 
    D.  will give out oxygen gas leaving behind aqueous hydrochloric acid. 
    E.  will produce hypochlorous acid. 

7. In the periodic table, elements in the same group have the same ?
    A. atomic number. 
    B. atomic mass. 
    C. electronic configuration. 
    D. number of shells. 
    E. number of valence electrons. 

8. The chemical formula for gypsum is ?
    A.  CaCOj
    B.  Ca(OH)2
    C.  CaSO 4.2H2O.
    D.  MgSO4.7H2O
    E.  Na2CO3.10H2O. 

 9. The greater the difference in electronegativity between bonded atoms, the ?
    A. higher the polarity of the bond. 
    B. higher the possibility of the substance formed being a molecule. 
    C. higher the solubility,
    D. lower the polarity of the bond. 
    E. weaker the bond. 

10. When butter fat dispersed in a weak sugar solution, it forms ?
    A. cellulose. 
    B. galactose. 
    C. glucose. 
    D. milk. 
    E. starch. 

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