BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

WAEC GCE Chemistry Questions 2018 and How to Check OBJ and Theory Answers | BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ. | Chemistry, WAEC GCE Chemistry, Chemistry WAEC Questions 2018 | In this article, I will be showing you past WAEC Chemistry objective and theory random repeated questions for free. You will also understand how WAEC Chemistry questions are set and many more examination details. All you need to do is to stay focus and follow this guide…

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

WAEC GCE Chemistry Questions 2018.

waec chemistry questions and answers 2016 | 2017 waec chemistry questions and answers | chemistry waec question 2017 | waec chemistry past questions download | chemistry waec question 2015 | waec chemistry practical past questions | waec chemistry objective questions and answers | waec 2017 chemistry answers | waec 2017 chemistry essay | 2017 waec chemistry questions and answers | waec 2017 chemistry questions | chemistry waec question 2017 | waec chemistry past questions download | gce 2017 chemistry question | chemistry question 2017 | gce past questions on chemistry.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZBEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

The West African Examinations Council (WAEC) is an examination board that conducts the West African Senior School Certificate Examination, for University and Jamb entry examination in West Africa countries. … In a year, over three million candidates registered for the exams coordinated by WAEC.

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.

| Check Government Random Repeated Questions Here”]

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

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.

BEST ANSWERS TO WAEC CHEMISTRY 2018 | WAEC JAMB AND NECO QUESTIONS ALL IN ONE 2018 EXPO RUNZ

If you need us to help you with more updated information at the right time about WAEC Chemistry Questions 2017, kindly provide us your phone number and email Address in the comment box below. Also feel free to ask any question pertaining to this guide.

What’s your take on this? We believe this article was interesting right, if yes, don’t hesitate using our share button below to inform – friends and relation via Facebook, twitter or Google+.

Related Post

GMT Nigeria Limited | Current GMT Recruitment 2017... GMT Nigeria Limited | Current GMT Recruitment 2017 Apply Here Current GMT Nigeria Limited Recruitment 2017 | Apply for Ongoing Recruitment at GMT Nige...
DETAILED WAEC GCE AGRICULTURAL SCIENCE QUESTIONS DETAILED WAEC GCE AGRICULTURAL SCIENCE QUESTIONS & ANSWERS 2017 Waec Gce & Neco Gce Examination with complete deals |  DETAILED WAEC GCE AGRIC...
Happy New Year 2018: Wishes Images SMS WhatsApp 2g... Happy New Year 2018: Wishes Images SMS WhatsApp 2go Messages And Friends Happy New Year 2018: Wishes Images SMS WhatsApp 2go Messages And Friends: ne...
2017 December happy new Month messages for girlfri... 2017 December happy new Month messages for girlfriend 2017 December happy new Month messages for girlfriend: however we also wish you happy Ch...
2018 European Commission Paid Traineeship 2018, Ap... 2018 European Commission Paid Traineeship 2018, Applications Details-Guide 2018 European Commission Paid Traineeship 2018, Applications Details-Guide...
Supplementary Admission From UNIUYO | 2017/2018 UN... Supplementary Admission From UNIUYO | 2017/2018 UNIUYO LATEST NEWS UNIUYO Basic Studies Supplementary Admission List 2017 – I, II & III | Suppleme...
Christmas in London 2017 – Christmas events, activ... Christmas in London 2017 – Christmas events, activities - Fun Christmas in London 2017 – Christmas events, activities - Fun: Feeling festive? With ou...
RECEIVED WAEC GCE HAUSA ANSWERS 2017 | WAEC GCE OB... RECEIVED WAEC GCE HAUSA ANSWERS 2017 | WAEC GCE OBJ/THEORY EXPO WAEC GCE Hausa Questions 2017 | Check OBJ and Theory Answers Here | RECEIVED WAEC GCE ...
UPDATED NIGERIAN NAVY CURRENT INTERVIEW QUESTIONS ... UPDATED NIGERIAN NAVY CURRENT INTERVIEW QUESTIONS & ANSWERS UPDATED NIGERIAN NAVY CURRENT INTERVIEW QUESTIONS & ANSWERS - nigerian navy past q...
BREAKING: N-Power explains how to check pre-select... BREAKING: N-Power explains how to check pre-selection status 2017 N-Power scheme set to release names of successful candidates by 11:30pm today. -Th...
Happy New Year 2018-For Africa Asia America and Wo... Happy New Year 2018-For Africa Asia America and World Wide Happy New Year 2018-For Africa Asia America and World Wide: new year wishes messages new y...
n power 2018 recruitment online | n power 2018 scr... n power 2018 recruitment online | n power 2018 screening date n power 2018 recruitment online | n power 2018 screening date: NPOWER SHORTLISTED CA...
Latest Update: UNIJOS Direct Entry Admission Scree... Latest Update: UNIJOS Direct Entry Admission Screening Form 2017 UNIJOS Direct Entry Admission Screening Form 2017 | Application Guide and Requirement...
POST UTME 2017/2018 UNIZIK ADMISSION FORM AVAILABL... POST UTME 2017/2018 UNIZIK ADMISSION FORM AVAILABLE POST UTME 2017/2018 UNIZIK ADMISSION FORM AVAILABLE | UNIZIK Post UTME 2017/2018 Forms | Nnamdi Az...
How do I find my US bank routing number/ latest How do I find my US bank routing number/ latest Searches related to Find your U.S. Bank checking account routing number b...
NYSC MOBILIZATION DATE AND TIMETABLE 2018 PRESENTL... NYSC MOBILIZATION DATE AND TIMETABLE 2018 PRESENTLY ONLINE KARISAS NYSC Batch A 2018 Timetable for Mobilization Exercise is Out | NYSC MOBILIZATION DA...

Pin It on Pinterest

Share This