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description2019 Jan/Feb Waec Gce Chemistry Objective and Essay Exam Questions and Answers

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2019/2020 Waec Gce Chemistry Objective and Essay Questions and Answers is available at for all 9Jatechs subscribers,  Get verified 2019 Waec Gce Chemistry Objective and Essay questions and Answers at night before the exam day.  Read the below article carefully to know how to Subscribe  for Chemistry Objective and Essay questions and answers. 


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Time and Date for 2019/2020 Waec Chemistry  Exam

Subjects for Wednesday, 23rd January, 2019
Chemistry 2 (Essay)  2hrs 1hr 2.00 pm – 4.00 pm
Chemistry 1 (Objective) 4.00 pm – 5.00 pm

Recommended : 2019 Jan/Feb Waec Gce Timetable

We provide you a forum for SSCE 
exam runs named Waec Exam Forum   and Neco Exams  Which enable you to see all previous  and current waec(gce) and Neco(Gce) Answers and questions. 

2019 Waec Gce Chemistry Objective and Essay Answers will be deliver to  all 9Jatechs Subscribers at night before the exam day,  you can also get free exam Expo on our portal(i. e  we are going to post answers 1hour after the exam start)  just like we did during  the previous  Civic Education 2018 Waec Gce Exam 

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SEE ALSO : 2018 Waec Gce Biology Practical Questions and Answers


2019/2020 Waec Gce Chemistry Objective and Essay Questions and answers now available, To get all questions and answers for 2019 Waec Gce Chemistry Objective and Essay Questions and answers now available, To get all questions and answers for Chemistry Objective and Essay  

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ALSO SEE: 2018 Waec Gce Physical and Practical Geography Questions and Answers | Waec Gce Expo


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ALSO SEE : 2018 Waec Gce Government Objective and Essay Questions and Answers | Waec Gce Exam Expo

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descriptionRe: 2019 Jan/Feb Waec Gce Chemistry Objective and Essay Exam Questions and Answers

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Here is questions for 2018 Waec April/May  Chemistry  Exam,  practice and answers the questions to get your self well equipped during the exam period. 

WAEC Chemistry Questions 2018 and How to Check OBJ and Theory Answers


SCHEME OF EXAMINATION
There will be three papers, Papers 1, 2 and 3 all of which must be taken. Papers 1 and 2 will be a composite paper to be taken at one sitting.

PAPER 1: Will consist of fifty multiple choice objective questions drawn from Section A of the syllabus. Candidates will be required to answer all the questions within 1 hour for 50 marks.

PAPER 2: Will be a 2-hour essay paper covering the entire syllabus and carrying a maximum of 100 marks. The paper will be in two sections: Sections A and B.

Section A: Will consist of ten short structured questions drawn from the common portion of the syllabus (i.e. Section A of the syllabus). Candidates will be required to answer all the questions for 25 marks.

Section B: Will consist of two questions from the common portion of the Syllabus (i.e. Section A of the syllabus) and two other questions from the Section of the syllabus which is peculiar to the country of the candidate (i.e. either) Section B or C of the syllabus). Candidates will be required to answer any three of the questions. Each question shall carry 25 marks.


PAPER 3:
This shall be a 2-hour practical test for school candidates or1 hour 30 minutes alternative to practical work test for private candidates. Each version of the paper shall contain three compulsory questions and carry 50 marks.

The questions shall be on the following aspects of the syllabus:
 One question on quantitative analysis;
 One question on qualitative analysis;
 The third question shall test candidates’ familiarity with the practical activities suggested in the syllabus.


PAPER 1 (OBJECTIVE TEST)
1. Isotopes of the same element have the same number of
A. Protons, neutrons and electrons.
B. Protons and neutrons but different number of electrons.
C. Protons and electrons but different number of neutrons.
D. Neutrons and electrons but different number of protons.

2. Which type of chemical bond is formed by the transfer of electrons?
A. Covalent
B. Dative
C. Ionic
D. Metallic

3. The concentration of an aqueous solution is 5mg dm-3. Determine is the concentration in parts per million (ppm).
A. 500 ppm
B. 50 ppm
C. 10 ppm
D. 5 ppm

4. Consider the following species: H, H+, H-. What is the number of electrons in each of the species respectively?
A. 1, 0, 2
B. 0, 1, 2
C. 2, 1, 0
D. 1, 2, 0



5. Two electrons can occupy the same orbital if they have different
A. Angular momentum quantum numbers.
B. Magnetic quantum numbers.
C. Principal quantum numbers.
D. Spin quantum numbers.

6. What mass of NaOH is required to make 250 cm3 of 0.10mol/dm-3 solution? [Na = 23, O = 16, H = 1]
A. 1 g
B. 4 g
C. 8 g
D. 16 g

7. Which of the following substances is not a hydrocarbon?
A. Benzene
B. Butane
C. Ethyne
D. Ethanamide

8. A substance which ionizes completely into hydroxonium ions is a
A. Strong acid.
B. Strong base.
C. Weak acid.
D. Weak base.

9. Which of the following solutions is able to resist changes in pH when small amounts of an acid or a base is added?
A. Buffer solution
B. Neutral solution
C. Saturated solution
D. Supersaturated solution

10. Protein is a polymer formed from the linkage of
A. Amino acid molecules.
B. Fatty acid molecules.
C. Glucose units.
D. Monosaccharides.

PAPER 2 (ESSAY)
SECTION A

1. Identify the solid remaining when each of the following is heated.
(a) lithium trioxonitrate (V);
(b) potassium trioxonitrate (V);
(c) calcium trioxonitrate (V);

2. (a) When calcium oxide and coke are heated in a electric furnace, the roducts are carbon (ii) oxide and calcium carbide (CaC2), write the equation for this reaction.

(b) Addition of water to calcium carbide leads to the formation of calcium hydroxide and ethyne. Write the equation for the production of ethyne.

3. Calculate the percentage by mass of silicon tetrachloride. [2 marks]
4. Ammonia, NH3, and phosphine, Ph3, are the hydrides of the first two elements in group 5.
(a) Draw a dot and cross diagram for the ammonia molecule. [2 marks]
(b) Sketch and explain the shape of the ammonia molecule. [3 marks]

5. The first ionization energy of chlorine is +1260KJmol-1.
(a) Define the term first ionization energy.
(b) State and explain the general trend in the values of the first ionization energy for the elements across the period, sodium to argon in the periodic table.

6. Compound A consisting of carbon and hydrogen only. The compound was found to contain 80% carbon by mass.
(a) Calculate the empirical formula of compound A using the data above.
(b) The relative molecular mass of compound A was found to be 30.
Use this information to deduce the molecular formula of compound A.
[H = 1.00 C = 12.00]



7. State two factors other than a change in temperature or the use of a catalyst that influence the rate of a chemical reaction.

SECTION B

1. (a) Two elements represented by the letters Q and R have atomic numbers 9 and 12 respectively.
(i) Write the election configuration of R.
(ii) To what group does Q belong in the periodic table.
(iii) Write the formula of the compound formed when Q combines with R.
(iv) Explain briefly, why Q is a good oxidizing agent.
(v) State whether R would be expected to form acidic or basic oxide.
(b) (i) State two assumptions of the kinetic theory of gases.
(ii) When some solids are heated, they change directly into the gaseous state. What name is given to this phenomenon?
(iii) List two substances which exhibit the phenomenon mentioned in (ii).
(iv) Write an expression to show the mathematical relationship between the rate of diffusion of a gas and its vapour.

2. An aqueous solution has a pH of 4.0.
(a) (i) What is the hydrogen ion concentration of the solution?
(ii) What effect will it have on litmus paper?
(iii) Which of the following salt solutions would have the same effect on litmus? Give a reason for your answer. NH4Cl(aq); NaCl(aq) ; CH3OON(aq).
(b) (i) Differentiate between a fine chemical and a heavy chemical.
(ii) Name two sources of air pollution.
(iii) Suggest one way of reducing air pollution in cities

3. (a) (i) Explain briefly the fermentation process.
(ii) Write a balanced equation for the fermentation of glucose.
(iii) What substance must be added to glucose solution to ferment it?
(iv) Explain briefly why tightly corked glass filled to the brim with palm wine shatters on standing.
(b) State one industrial application of each of the following methods of separation:
(i) Crystallization;
(ii) Fractional distillation.
(c) Explain the following terms:
(i) Saponification;
(ii) Esterification.
(d) Write a balanced equation to illustrate each of the terms in (c).
(e) i) What is hydrocarbon compound?
(ii) Name two principal sources of hydrocarbons.


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descriptionRe: 2019 Jan/Feb Waec Gce Chemistry Objective and Essay Exam Questions and Answers

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Are you looking for 2019/2020  West African Examination Council (Waec)  Chemistry syllabus? If yes, you're have come to the right place.

Let's know what syllabus is.

A syllabus is an academic document that communicates course information and defines expectations and responsibilities. It is descriptive. A syllabus may be set out by an exam board or prepared by the professor who supervises or controls course quality.


This Chemistry syllabus is your guide to tackling WAEC questions and also expose you to nearly everything you need to know about possible questions in 2019 Waec Chemistry  exam . They are well-organized, specific and detailed. They are a form of communication between the West African Examinations Council (WAEC) and candidates preparing for their exams.

SEE ALSO 2019 Jan/Feb Waec Gce Time Table

Some of the poor performance of students in Waec Exam is due to inadequate coverage of syllabus and non-familiarity with test format in school,  a serious student who want to make a good result will take he/her time to cover the syllabus before exam time. 

9Jatechs have provide you a comprehensive Waec (SSCE/GCE) Chemistry syllabus  for free to download and get your self free from exam bondage. 



descriptionRe: 2019 Jan/Feb Waec Gce Chemistry Objective and Essay Exam Questions and Answers

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