2020 GCE Chemistry OBJ & Essay Questions & Answers (Today Expo)

2020 GCE Chemistry: What are the areas GCE will set Chemistry Questions from and how do I get GCE Chemistry 2020 OBJ And Essay Questions? GCE 2020 Chemistry Questions is what we shall discuss here.

GCE Chemistry is important to every GCE 2020 Science Candidate. Read on for Sample Questions GCE would set in 2020 Chemistry Objective and Theory or click here for Waec GCE 2020 Chemistry Syllabus.

RECOMMENDED
A. BLAST 2020 POST UTME WITH FLASHLEARNERS
B. SSCE, JAMB And BLOGGING CLASS

Waec GCE 2020 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 the 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 2020 Chemistry Objective Questions
2020 Waec GCE Chemistry Essay Questions And Answers.
Instructions To Pass gce 2020 Examination.

GCE 2020 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 2020 Chemistry Science is 50.

RECOMMENDED
A. BLAST 2020 POST UTME WITH FLASHLEARNERS

The Following Are Sample Waec GCE Objective Questions. They are likely Chemistry questions for Waec GCE 2020.

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 ΔH 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
View Answer & Discuss (1)

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

Note: Check Waec GCE GCE Timetable, the Examination date

Chemistry Waec GCE 2020 Theory Questions And Anwers

The following are the kind of questions you should expect in Waec GCE 2020 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 2020 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

Related To 2020 Waec GCE Chemistry obj and Essay:

Waec GCE 2020 esssay answers
Waec GCE answer for Chemistry science
Flashlearners Chemistry answer Waec GCE 2020
answer Waec GCE 2020 Chemistry
www. Waec GCE 2020
Chemistry obj Waec GCE 2020
Waec GCE exam timetable
2020 Waec GCE Chemistry questions
2020 Waec GCE Chemistry answers
2020 Waec GCE Chemistry syllabus

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.

Feel free to share this article with friends using the share buttons and don’t fail to comment using the comment box below.

RECOMMENDED
A. JAMB, POST UTME AND WAEC APP
B. SSCE, JAMB AND BLOGGING CLASS
C. GET MY LATEST UPDATES FOR FREE

WHAT ELSE DO YOU WANT?
A. I WANT TO SEARCH
B. COMPLETE JAMB GUIDE
C. ALL ABOUT WAEC AND NECO
D. VACANCIES AND RECRUITMENT 
E. LATEST NIGERIA SCHOOL NEWS
F. ACADEMIC AND CAREER GUIDE
G. SCHOLARSHIPS AND INTERNSHIPS

TRENDING O-LEVEL GUIDE

Author
Recent Posts

Follow me

Isaac Inegbenehi

CEO at Flashlearners

Welcome To Flashlearners: I'm Flash Isaac; Students Advocate, SEO Expert And A Blogger From The Future. Click Here For More About Me Or Follow Me On Instagram @iamflashisaac

Follow me

Latest posts by Isaac Inegbenehi (see all)

When 2020 UNILAG Direct Entry (DE) Form Will Be Out - Mar 29, 2020
When UNILAG 2020 Post UTME Form Will Be Out - Mar 29, 2020
Latest Update On UNILAG 2020 Post UTME Form And Screening - Mar 29, 2020

Comments

What To Expect In Waec GCE Chemistry And Hot Questions — 11 Comments

ogu Emmanuella on Mar 7, 2020 at 8:10 am said:
Thank u Sir for your help
Reply ↓
Anonymous on Jan 21, 2020 at 10:36 pm said:
Thanks sir this will really help
Reply ↓
ALFORCE on Jan 6, 2020 at 9:24 pm said:
NEED OF PAPER 2
Reply ↓
Anonymous on Sep 17, 2019 at 8:14 am said:
This is really okay
Reply ↓
Anonymous on Sep 16, 2019 at 9:12 am said:
Thanks to u sir please I need it now
Reply ↓
Daniel on Aug 10, 2019 at 9:59 pm said:
Thanks sir more grace
Reply ↓
lucky elliot .o on Aug 2, 2019 at 4:06 pm said:
thanks you sir more grace
Reply ↓
Akinrintoyo bose on Jun 21, 2019 at 1:28 pm said:
This is really helpful ! God bless u sir
But I think the answers should also be provided for quick learning
Reply ↓
Emmanuel Gift on Mar 18, 2019 at 10:40 pm said:
Thanks a lot
This will be helpful
Reply ↓
hafsat nuradddeen sani on Mar 11, 2019 at 4:38 pm said:
Chemistry is the best subject thank u sir
Reply ↓
Alamutu yaasir on Jan 23, 2019 at 8:49 am said:
What to expect I mean likely questions
Reply ↓

Flashlearners

Flashlearners is an Education and Career Blog focused On Study Guide, Jobs, Tech, School News, JAMB, SSCE And Blogging.

What To Expect In Waec GCE Chemistry And Hot Questions