Likely GCE 2021 Chemistry Objective & Essay Questions

2021 GCE Chemistry: What are the areas GCE will set Chemistry Questions from and how do I get GCE Chemistry 2021 OBJ And Essay Questions? GCE 2021 Chemistry Questions is what we shall discuss here.

GCE Chemistry is important to every GCE 2021 Science Candidate. Read on for Sample Questions GCE would set in 2021 Chemistry Objective and Theory or click here for Waec GCE 2021 Chemistry Syllabus.

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1. Waec Videos For All Topics
2. Waec GCE 2021 Chemistry 1 & 2 Questions And Answers
3. GCE 2021 Chemistry Objective Questions
4. Chemistry Waec GCE 2021 Theory Questions And Answers
5. Waec GCE 2021 Examination Instructions

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Waec GCE 2021 Chemistry 1 & 2 Questions And Answers

You have asked the questions, what are the areas Waec GCE 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:

Waec GCE 2021 Chemistry Objective Questions
2021 Waec GCE Chemistry Essay Questions And Answers.
Instructions To Pass GCE 2021 Examination.

GCE 2021 Chemistry Objective Questions

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

The Following Are Sample Waec GCE Objective Questions. They are likely Chemistry questions for Waec GCE 2021.

1. Due to the high reactivity of sodium, it is usually stored under

A. water
B. mercury
C. paraffin
D. phenol

2. The furring of kettles is caused by the presence in water of

A. calcium hydrogentrioxocarbonate (IV)
B. calcium trioxocarbonate (IV)
C. calcium tetraoxosulphate (VI)
D. calcium hydroxide

3. Water for town supply is chlorinate to make it free from

A. bad colour
B. bacteria
C. temporary hardness
D. permanent hardness

4. Ca(OH)_2(s) + 2NH₄Cl_(g) †’ CaCl_2(s) + 2H₂O_2(l) + X. In the reaction above X is

A. NO₂
B. NH₃
C. N₂O
D. NO₂

5. X_(g) + 3Y_(g) —- 2z_(g) H = +ve. if the reaction above takes place at room temperature, the G will be

A. negative
B. zero
C. positive
D. indeterminate

6. In the laboratory preparation of trioxonitrate (V) acid the nitrogen(iv) oxide formed as a by-product is removed by

A. further heating
B. adding concentrated H₂SO₄
C. cooling the acid solution with cold water
D. bubbling air through the acid solution

7. A particle that contains a protons, 10 neutrons and 10 electrons is

A. positive ion
B. neutral atom of a metal
C. neutral atom of a non-metal
D. negative ion

8. Ethene is prepared industrially by

A. Reforming
B. Polymerization
C. Distillation
D. Cracking

9. Calculate the amount in moles of a gas which occupies 10.5 dm³ at 6 atm and 30^oC [R = 082 atm dm³ K^-1 mol^-1]

A. 2.536
B. 1.623
C. 4.736
D. 0.394

10. If 100cm³ of oxygen pass through a porous plug is 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is? [O = 16, H = 1]

A. 10.0s
B. 12.5s
C. 17.7s
D. 32.0s

11. When Î”H is negative, a reaction is said to be

A. endothermic
B. exothermic
C. reversible
D. ionic

$_{88}^{226} R a$ †’ $_{86}^{x} R n$ + alpha particle

A. 226
B. 220
C. 227
D. 222

13. The shape of ammonia molecules is

A. trigonal planar
B. octahedral
C. square planar
D. tetrahedral

14. The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is ”“ (Ag = 108 F = 96500(mol^-1)

A. 54.0g
B. 27.0g
C. 13.5g
D. 108.0g

15. Tin is unaffected by air at ordinary temperature due to its

A. Low melting point
B. Weak electropositive character
C. High boiling point
D. White lustrous appearance

16. The tincture of iodine means iodine dissolved in
A. ethanol
B. bromine chloride
C. chlorine water
D. water
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17. Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of
A. CaCO3
B. Na2CO3
C. Na2SO4
D. CaSO4

18. The acid anhydride that will produce weak acid in water is
A. SO3
B. NO2
C. SO2
D. CO2

19. In the laboratory preparation of ethyl ethanoate, the water present in the mixture is removed using a solution of
A. an hydrous CaCl4
B. concentrated NaCO4
C. dilute NaOH
D. concentrated H4SO4

20. Which of the following reactions would take place when concentrated sodium hydroxide solution is added to palm oil?
A. Esterification
B. Neutralization
C. Polymerization
D. Saponification

21. Starch could be converted to glucose by the process of
A. Condensation
B. Dehydration
C. Fermentation
D. Hydrolysis

22. Which of the following compounds is a secondary alkanol?
A. Ethanol
B. 2-methylbutan-2-ol
C. 3-methylpentan-2-ol
D. Propan-1-ol

23. Which of the following substances is a heavy chemical?
A. Ammonia
B. Barim Hydroxide
C. Hydrochloric acid
D. Tetraoxosulphate(VI)acid

24. Which of the following process does not take place in domestic water treatment?
A. Chlorination
B. Flocculation
C. Neutralization
D. Sedimentation

25. A substance responsible for the sour taste of unripe orange is
A. Alkene
B. Alkanol
C. Alkanoic acid
D. Alkanoate

26. Which of the following products of biotechnology can be used as a fuel in place of petrol?
A. Butane
B. Ethanol
C. Ethene
D. Propanol

27. Which of the following polymers in thermosetting?
A. Bakelite
B. Nylon
C. Polypropene
D. Polystyrene

28. Which of the following gases is monoatomic?
A. Argon
B. Chlorine
C. Nitrogen
D. Oxygen

29. The general formula of alkanones is
A. RCHO
B. R2CO
C. RCOOH
D. RCOOR

30. The constituent common to duralumin and alnico is
A. Co
B. Mn
C. Al
D. Mg

31. The shape of the S-orbital is
A. elliptical
B. spiral
C. circular
D. spherical

32. Aluminium hydroxide is used in the dyeing industry as a
A. dye
B. dispersant
C. salt
D. mordant

33. A sample of orange juice is found to have a PH of 3.80. What is the concentration of the hydroxide ion in the juice?

A. 1.6 $\times$ 10^-4
B. 6.3 $\times$ 10^-11
C. 6.3 $\times$ 10^-4
D. 1.6 $\times$ 10^-11

34. Incomplete oxidation of ethanol yields

A. CH₃COOH
B. CH₃COCH₃
C. CH₃CH₂OCH₂CH₃
D. CH₂CHO

35. The salt formed from a weak acid and a strong base hydrolyzes in water to form

A. A saturated solution
B. an acidic solution
C. a buffer solution
D. an alkaline solution

Chemistry Waec GCE 2021 Theory Questions And Answers

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

Write short note on the following:
A. Isotopy
B. Resonance
C. Isomerism
D. Reforming
Different between exothermic and endothermic reaction with the aid of equations.
When few drops of concentrated trioxonitrate(V) acid is added to an unknown sample and wanned an intense yellow colouration is observed. The likely functional group present in the sample is

Waec GCE 2021 Examination Instructions

Do not open your question paper until you are told to do so
USE HB pencil throughout in the OBJ Section
You are free to use Biro in the theory part
You are allowed to use calculator to solve
Make sure that you fill your name, Subject, paper, paper code and other examination details where necessary.
Ensure that the texts in your question papers are boldly printed
Behave yourself.
Don’t let invigilators catch you using expo

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

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