Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Searching 18,000+ Questions...
Sifting topics, KaTeX formulas & verified solutions
Showing 17791–17805 of 29821 verified questions
Sort by:
Chemistry
WAEC / WASSCE 2002
Atomic Structure, Orbitals & Nuclear Chemistry
Solution
(a) What is the shape of (i) p - orbital; (ii) a molecule of methane; (iii) a molecule of carbon (IV) oxide?
(b) Consider the following elements: Ne, S, CI, 0, Fe, Mg. State which of them
(i) exhibit(s) allotropy;
(ii) form(s) coloured ions;
(iii) is/are malleable;
(iv) consist(s) of molecules that are far apart at room temperature;
(v) form(s) hydrides by sharing electrons with hydrogen;
(vi) has/have complete outermost shell.
(c)(i) List three applications of radioactivity in different fields.
(ii) Explain clearly the difference between the following reactions involving electron loss from lead.
\(^{211} pb\) \(\to\) \(^{ 211}Bi\) + \(^0_{-1}\); Pb \(\to\) pb\(^{3+}\) _ 2e\(^-\)
(iii) Give one advantage and one disadvantage of nuclear power generation over the use of fossil fuels.
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a)(i) P=orbital are mutually perpendicular dumb-bell shaped lobes.
(ii) Methane is tetrahedral
(iii) Carbon (IV) oxide is linear.
(b)(i) Sulphur exhibits allotropy
(ii) Fe
(iii) Fe and Mg
(iv) Ne, CI, O
(v) Mg
(vi)Ne.
(c)(i) —Medical uses
— Sterilization
— Industrial uses
—Agricultural purposes
— Radioactive tracers
— Dating techniques
(ii) \(^{211} pb\) \(\to\) \(^{ 211}Bi\) + e is a radioactive reaction. It involves the production of beta particles and transmutation of Pb to Bi.
Pb --> Pb\(^{2+}\) + 2e\(^-\) is an ionisation reaction where Pb lost two electrons (oxidation) to become Pb\(^{2+}\).
(iii) Advantage: Nuclear power generation can work day and night for a few years with the same uranium fuel. Disadvantage: It is too expensive to install when compared with fossil fuels.
Source: Myschool Past Questions Archive (Record #52745)
Chemistry
WAEC / WASSCE 2002
Electrolysis & Electrochemical Cells
Solution
(a) Giving different examples, mention one metal in each case which produces hydrogen on reacting with
(i) dilute mineral acid
(ii) cold water;
(iii) steam;
(iv) hot, concentrated alkali.
(b) In an experiment, excess 0.50 mol dm\(^{-3}\) HCI was added to 1Og of granulated zinc in a beaker. Other conditions remaining constant, state how the reaction rate would be affected in each case, if the experiment was repeated using:
(i) 1.0 mol dm\(^{-3}\) HCI;
(ii) 8.0g of granulated zinc;
(iii) 10g of zinc dust;
(iv) a higher volume of 0.50 mol dm HCI;
(v) a reaction vessel dipped in crushed ice;
(vi) equal volumes of water and 0.50 mol dm\(^3\) HCI.
(c) Aluminium is extracted from its ore by electrolysis.
(i) Name the ore from which the metal is extracted.
(ii) State the role of molten cryolite in the extraction.
(iii) Describe in outline how the ore is purified before electrolysis
(iv) Calculate the current in amperes required to produce 18.0g of aluminium in 1.50 hours. [Al = 27.0; F = 96500C]
(d) Give the reason why
(i) aluminium, which is a reactive metal, is resistant to corrosion.
(ii) metals are generally good reducing agents.
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a)(i) Zn; Na, Ca, Mg, etc.
(ii) Na, K, Ca.
(iii) Mg, Al, Zn, Iro
(iv) Sn, Zn, or AI
(b)(i) The forward reaction is favoured and it proceeds faster in that direction.
(ii) The reaction rate is slowed because of the reduction in the concentration of Zn.
(iii) Zinc dust will make available more area of contact and hence it favours the forward reaction speedily.
(iv) Increasing the volume of HCI will increase the concentration of the reactants and hence favours the forward reaction by speeding it up
(v) Since the reaction condition remain constant, dipping the vessel in crushed ice will alter the rate of the reaction.
(vi) Adding water will reduce the concentration of the reactants and this will slow down the reaction rate.
(c)(i) Bauxite - Al\(_2\)O\(_3\).2H\(_2\)O
(ii) The molten cryolite prevents the molten aluminium from atmospheric oxidation.
(iii) The bauxite is first heated with caustic soda under pressure — Al\(_2\)O\(_3\) + 2NaOH + 3H\(_2\)O \(\to\) 2NaAl(OH)\(_4\). The aluminate
(iii) is then seeded with aluminium hydroxide crystals to induce the precipitation of aluminium hydroxide Na Al(OH)\(_4\) Al(OH)\(_3\) + NaOH. The Al(OH)\(_2\) is then filtered off, washed, dried and heated strongly to yield Al\(_2\)O\(_3\).
2Al(OH)\(_3\) \(\to\) Al\(_2\)O\(_3\) + 3H\(_2\)O
(iv) Al\(^{3+}\) + 3e\(^-\) —> Al; 3 x 96500 —> 27; x —>18.
x = \(\frac{18}{27}\) x 3 x 96500 = 19300c
but Q = it; I x t = 193000; but t = 1.50 hrs = 1 x 3600 + 50 x 60 = 6600
I x 6600 = 193000
I = \(\frac{193000}{6600}\) = 29.2A
(d)(i) Aluminium when exposed to air acquires a thin continuous coating of aluminium oxide, which prevents further attack of the metal by atmospheric oxygen and water or steam and it is said to be corrosion-free.
(ii) Metals are generally good reducing agents because they tend to donate their electrons readily during chemical reactions.
Source: Myschool Past Questions Archive (Record #52746)
Chemistry
WAEC / WASSCE 2002
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Solution
(a) What term is used to describe each of the following processes?
(i) Alkaline hydrolysis of fats and oils;
(ii) The conversion of glucose into ethanol by enzymatic action;
(iii) Thermal decomposition of higher petroleum fractions into lower molecular mass hydrocarbons in the presence of catalyst.
(b)(i) Write the structure and IUPAC name for one alkanoic acid with the molecular formula C\(_4\)H\(_8\)0\(_2\).
(ii) Arrange the following compounds in order of increasing boiling point: Butane; Butanoic acid; Methylpropane.
(iii) Give an explanation for your answer in (b)(ii).
(c)(i) Ethanol was used for preparing a gas X which decolorized bromine water. Identify X and describe briefly its laboratory preparation.
(ii) Write an equation to show how ethanol reacts with sodium
(iii) Give the reagent and reaction conditions for the conversion of ethanol into C\(_2\)H\(_5\)COOC\(_2\)H\(_5\).
(d) State the type of recction involved in each of the conversions indicated below:
(i)C\(_6\)H\(_6\)C\(_6\)H\(_5\)CH\(_3\)
(ii) nC\(_2\)H\(_4\) \(\to\) (CH\(_2\) - CH\(_2\)),
(iii) CH\(_3\)CH\(_2\)CH(OH)CH\(_3\) -> CH\(_3\)CH\(_2\)CCH\(_3\)
(iv) (C\(_6\)H\(_{10}\)O\(_5\)) -> C\(_6\)H\(_{12}\)O\(_6\).
(iv)
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a) Saponification
(ii) Fermentation
(iii) Catalytical cracking/thermal cracking
(b)(I) C\(_4\)H\(_8\)O\(_2\) ; CH\(_3\)CH\(_2\)CH\(_2\)COOH(1 -- butanoic acid) OR CHCH(CH\(_3\))COOH (2 methyl - 1 - propanoic acid.)
(ii) Butanoic acid > Butane > methyipropane
(iii) Butanoic acid is a liquid and heavier than butane. butane though a gas is heavier and more stable than methyipropane.
(c)(i) The gas is ethene. Ethene is prepared in the laboratory by action of ethanol on concentrated H\(_2\)SO\(_4\). The overall reaction is a catalytic dehydration of ethanol. C\(_2\)H\(_5\)OH \(\to\) C\(_2\)H\(_4\)
(ii) -H\(_2\)O
2C\(_2\)H\(_5\)OH + 2Na \(\to\) 2C\(_2\)H\(_5\)ONa + H\(_2\).
Conc. H\(_2\)SO\(_4\)
(iii) The reagents are ethanol (C\(_2\)H\(_5\)OH) and propanoic acid (C\(_2\)H\(_5\)COOH). The reaction conditions are (i) Temperature of 150^\circC and concentrated H\(_2\)SO\(_4\).
(d)(i) Substitution reaction
(ii) Polymerisation reaction
(iii) Catalytic dehydration
(iv) Hydrolysis
(v) Addition reaction.
Source: Myschool Past Questions Archive (Record #52749)
Chemistry
WAEC / WASSCE 2002
Kinetic Theory of Matter & Gas Laws
Solution
(a) Explain in terms of the kinetic theory why a tyre should not be overinflated.
(b)The following results were obtained at room temperature in an experiment to verify one of the gas laws using a glass syringe:
Pressure (P) of air in syringe (atm)
Volume (V) of air in syringe (cm\(^3\)
\(\frac{I}{V}\)
0.100
10.00
0.100
0.125
8.00
0.125
0.150
6.60
0.150
0.175
5.60
0.179
0.200
4.80
0.208
0.225
4.40
0.227
(i) Plot a graph of P against \(\frac{1}{v}\), using 1 cm to represent 0.01 atm on the vertical axis and 1cm to represent 0.02 unit on the horizontal axis.
(ii) Which of the gas laws is in agreement with the results?
(c) The flow chart below represents the stages involved in the manufacture of H\(_2\)SO\(_4\).
+x +Conc. H\(_2\)SO\(_4\) +H\(_2\)O
S + O\(_2\) \(\to\) SO\(_2\) \(\to\) SO\(_3\) \(\to\) Y \(\to\) Conc H\(_2\)SO\(_4\)
stage I stage II stage III stage IV
(i) Name the process represented by the chart.
(ii) Identify reactant X and product Y.
(iii) What are the operating temperature and pressure at stage II?
(iv) Mention the stage which requires a catalyst and state the catalyst used.
(v) Give the reason why the SO\(_3\) produced in stage II is not dissolved directly in water to form the acid
(d) When K\(_4\)Cr\(_2\)C\(_7\) dissolves in water, the following equilibrium is established:
Cr\(_2\)O\(^{2-}_{7(aq)}\) + H\(_2\)O\(_{(l)}\) \(\to\) 2CrO\(^{2-}_{4(aq)}\) + 2H\(_{aq}\)
(i) State the colour observed on adding a few drops of dilute H\(_2\)SO\(_4\) to the system.
(ii) Explain your answer in (d)(1).
(iii) What principle is applicable to this explanation?
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a) As the vehicle moves, the gas particles in the tyre gain kinetic energy and the collision rate increases. This builds up the pressure in the type, if the tyre is overinflated, it may burst
b)(i)
Pressure (P) of air in syringe (atm)
Volume (V) of air in syringe (cm\(^3\)
\(\frac{I}{V}\)
0.100
10.00
0.100
0.125
8.00
0.125
0.150
6.60
0.150
0.175
5.60
0.179
0.200
4.80
0.208
0.225
4.40
0.227
Scale: -1cm representing 0.01 unit on p axis
= 1cm to 0.02 unit on the \(\frac{1}{v}\) axis
(ii) Boyle's Law
(C)(i) Contact process
(ii) X is oxygen, Y is H\(_2\)S\(_2\)O\(_7\) (oleum)
(iii) The temperature of about 450 - 500^\circC
(iv) Stage II and the catalyst is V\(_2\)O\(_5\) (vanadium v oxide)
(v) The oxide is not dissolved directly in water because the heat evolved causes the solution to boil, producing a mist of acid droplets which would pervade the factory
(d)(i) The colour change is from yellow to green
(ii) The acidic property (of the gas SO\(_2\) from H\(_2\)SO\(_4\) i.e SO\(_4\)) causes the colour change.
(iii) Principle of ion exchange through oxidation and reduction.
Source: Myschool Past Questions Archive (Record #52752)
Chemistry
WAEC / WASSCE 2002
Water, Solutions & Solubility
Solution
(a)(i) State three methods of preparing salts, giving one example in each case of a salt so prepared.
(ii) What type of salt is each of the following? NaH\(_2\)PO\(_4\); (CH\(_3\)COO)\(_2\)Pb; KAI(SO\(_4\))\(_2\). 12H\(_2\)O.
(b)(i) Write an equation for the reaction between dilute HCI and a solution of AgNO\(_3\).
(ii) Explain why NaNO\(_3\) is preferred to AgNO\(_3\) in the preparation of oxygen by thermal decomposition of trioxonitrate (V) salts.
(iii) When silver wire was dipped into an aqueous solution of CuSO\(_4\), the wire remained intact but when the wire was replaced with zinc rod, the rod decreased in size. Give an explanation for this observation.
(c) When a sample of a crystalline salt X was exposed to air, there was a loss in mass.
(i) What phenomenon was exhibited by X?
(ii) Suggest two substances which X could be.
(iii) On heating 5.00 g of a fresh sample of X to constant mass, 1.80g was lost in the form of water vapour. Calculate the number of molecules of water of crystallization in one molecule of X. [H = 1.00; O = 16.00; Anhydrous form of X = 160 g mol\(^{-1}\)
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a)(i) - By the action of a dilute acid on a metal e.g. Zn + 2HCI --> ZnCl\(_2\) + H\(_2\) or Mg + H\(_2\)SO\(_4\) \(\to\) MgSO\(_4\) + H\(_2\)
- By neutralisation of an alkali by an acid e.g NaOH + HCI -> NaCI + H\(_2\)O
-By the action of a dilute acid on an insoluble base e.g 2HCI + MgO -> MgCl\(_2\) + H\(_2\)O
-By the action of a dilute acid on a trioxocarbonate (IV) e.g 2HCI + CaCO\(_2\) \(\to\) CaCl\(_2\) \pm H\(_2\) O + CO\(_2\)
(ii) NaH\(_2\)PO\(_2\) -An acid salt;
(CH\(_3\)COO)\(_2\) Pb -An organic salt
KAI(SO\(_4\))\(_2\) . 12H\(_2\)O - hydrated double salt
(b)(i) HCI + Ag NO\(_3\) -> AgCI \(\downarrow\) + HNO\(_3\)O
(ii) NaNO\(_3\) is preferred to AgNO\(_3\) in the thermal decomposition to give O\(_2\) because NaNO\(_3\) decomposes to only solid and O\(_2\) gas making it easy to collect, unlike AgNO\(_3\) which decomposes into silver, oxygen and nitrogen (IV) oxide.
(iii) Silver cannot displace Cu\(^{2+}\) in the solution of CuSO\(_4) but Zn can, because Zn is higher than Cu in the activity series but Ag is lower than Cu.
(c)(i) Efflorescence
(ii) Na\(_2\)CO\(_3\). 10H\(_2\)O or CuSO\(_4\) .10H\(_2\)O.
-mH\(_2\)O
(iii) X .mH\(_2\)O \(\to\) X. from the heat equation 160 + 18m --> 160 ; 5 ->1.80
heat
\(\frac{160 + 18m}{5}\) = \(\frac{160}{1.80}\)
288 + 32.4m = 512
m = \(\frac{512}{32.4}\)
= 15.8
m = 16 molecules
Source: Myschool Past Questions Archive (Record #52753)
Chemistry
WAEC / WASSCE 2002
Nature of Matter & Separation Techniques
Solution
a)(i) Give two uses of ammonia.
(ii) Name the process by which ammoniacal liquor can be obtained from coal and list two other products of the reaction
(iii) What type of reaction is involved in the conversion of ammoniacal liquor to (NH\(_4\))\(_2\)SO\(_4\) by dilute H\(_2\)SO\(_4\)?
(iv) Sketch and label an energy profile diagram to show the effect of presence of Pt/Rh on the reaction represented by the following equation: 4NH\(_3\) + 5O\(_2\) \(\to\) 6H\(_2\)O + 4NO; \(\Delta\)H = —907 kJmol\(^1\)
(b) Rock salt is an impure form of sodium chloride.
(i) Outline a suitable procedure for preparing a pure sample of sodium chloride from rock salt.
(ii) State two methods that can be used to prepare chlorine from rock salt. Write an appropriate equation in each case.
(c) Lead pigments were used in a water colour painting which turned black after prolonged exposure to an air pollutant. The original colour was restored by using H\(_2\)O\(_2\) which converted the black substance to a simple, white lead (II) salt.
(i) Which pollutant turned the painting black?
(ii) Write the formula of the black substance
(iii) What is the white salt?
(iv) State the role of H\(_2\)O in the restoration process.
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a)(i) -As a softening agent in temporary hard water.
-As a solvent for removing grease and oil stains.
-Cooling agent in some refrigerators.
-It is used in the manufacturing of HNO\(_3\) and Na\(_2\)CO\(_3\)
- In the manufacture of fertilizers.
(ii) By destructive distillation of coal and wood, the ammoniacal liquor is obtained by fractional distillation. Other products of the reactions are coal tar, coal, gas and coke.
(iii) Displacement reaction.
(iv)
The rocKsalt is an impure form of NaCI.
(b)(i) It can be mined as a solid or pumped out of the ground as brine. The best method of obtaining NaCI from the brine is by industrial electrolysis
(ii) By electrolysis and displacement reaction. At the anode; CI --> CI + e\(^-\)
CI + CI --> + Cl\(_2\) ; 2NaCl + MnO + 2H\(_2\)SO\(_4\) -> Na\(_2\)SO\(_4\) + MnSO\(_4\) + 2H\(_2\)O + C\(l_2\)
(c)(i) -SO\(_2\)
(ii) -PbS
(iii) -PbCl\(_2\)
(iv) Bleaching agent.
Source: Myschool Past Questions Archive (Record #52754)
Chemistry
WAEC / WASSCE 2002
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
All your burette readings (initial and final), as well as the size of your pipette, must be recorded but no account or expeimental procedure is required. All calculations must be done in your answer book.
A is 0.125 mol dm\(^3\) H\(_2\)SO\(_4\). B is a solution containing X g dm\(^{-3}\) of NaOH.
(a) Put A into the burette and titrate it against 20.0 cm\(^3\) or 25.0 cm\(^3\) portions of B using methyl orange as indicator. Record the volume of your pipette. Tabulate your burette readings and calculate the average volume of A used. The equation for the reaction involved in the titration is H\(_2\)SO\(_4\) +2NaOH\(_{(aq)}\) \(\to\) Na\(_2\)SO\(_4\) + 2H\(_2\)O\(_{(l)}\)
(b) From your results and the information provided above, calculate the;
(i) amount of H\(_2\)SO\(_4\) in the average volume of A used
(ii) Concentration of B in mol dm\(^{-3}\)
(iii) value of X.
[H = 1: O = 16; Na = 23]
(c) Describe briefly a suitable laboratory procedure for obtaining pure water from the titration mixture. (No diagram is required)
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a) Volume of pipette = 25.00 cm\(^3\)l indicator used = methyl orange, colour change at endpoint from yellow to orange/purple
Burette reading
Rough
1st
2nd
3rd
Final burette readings(cm\(^3\))
24.00
23.25
24.15
38.20
Final burette readings (cm\(^3\))
0.00
0.00
10.00
15.00
Volume of A used.
24.00
23.25
23.15
23.20
Average volume of A used = \(\frac{23.25 + 23.15 + 23.20}{3}\) = \(\frac{69.6}{3}\) = 23.20 cm\(^3\)
(b)(i) A contains 0.125 mol/dm\(^3\) of H\(_2\)SO\(_4\) (given)
I.e. 0.125 in 1000 cm\(^3\) of H\(
_2\)SO\(_4\)
x in 23.20; x = \(\frac{23.20}{1000}\) x 0.125 = 0.0029 mol per 23.20 cm\(^3\)
(ii) \(\frac{\text{concentration of A x volume of A}}{\text{concentration of B x volume of B}}\) = mole ratio of \(\frac{A}{B}\)
C\(_B\) = \(\frac{0.125 \times 23.20}{C_B \times 25}\) = \(\frac{1}{2}\)
C\(_B\) = 0.232 mol/dm\(^3\)
(iii) B contains Xg/dm\(^3\) of NaOH, molar mass of NaOH = 23 + 16 + 1 = 40
mass concentration = mole concentration x molar mass = 0.2332 x 40
x = 0.28g
(c) Pure water can be obtained from the solution of Na\(_2\)SO\(_4\) + 2H\(_2\)O by ordinary distillation. Distillation involves the boiling point only and the vapour condensed to give the distllate.
Source: Myschool Past Questions Archive (Record #60106)
Chemistry
WAEC / WASSCE 2002
Acids, Bases, pH & Salts
Solution
Credit will be given for strict adherence to the instructions, for observations precisely recorded and for accurate inferences. All tests, observations, and inferences must be clearly entered in your answer book, in ink, at the i.itne time they are made.
C is a sample of copper (II) tetraoxosulphate (VI) crystals. Carry out the following exercises on C. Record your observations and identify any gases evolved. State the conclusion you draw from the result of each test.
(a) Put half of C in a test tube and heat strongly
(b) Make solution of about 10 cm\(^{-3}\) with the sécond half of C and divide it into three portions
(i) To the first portion, add Sodium hydroxide solution in drops and then in excess. Heat the mixture
(ii) To the second portion, add aqueous ammonia in drops and then in excess followed by few drops of moderately concentrated HCI.
(iii) To the third portion, add all the zinc dust provided and stir thoroughly until there is a visible change.
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
Test
Observation
Inference
(a) C + Heat
Water droplets were observed first on the inner side of the test tube. A colourless gas with an irritating smell evolved which turns blue litmus red.
The water of crystalisation
(b) C + Water
It is soluble in water
Soluble salts
(i) C + NaOH in drops and excess
A light pale blue ppt. insoluble in excess of NaOH was formed
CU\(^{2+}\) are present
(ii) C + NH\(_4\)OH and a few drops of Conc. HCL
A blue ppt is formed which is insoluble in HCL
Cu\(^{2+}\) are present
(iii) Zinc + C in solution
The colour changed from blue to colourless
Displacement reaction
Source: Myschool Past Questions Archive (Record #60108)
Chemistry
WAEC / WASSCE 2002
Acids, Bases, pH & Salts
Solution
(a) Suggest how the following liquid reagents can be suitably stored in the laboratory
(i) X which fumes in moist air;
(ii) Y which is slowly decomposed by sunlight in ordinary reagent bottles.
(b) State what is observed when aqueous ammonia is added to:
(i) litmus paper;
(ii) Pb(NO\(_3\))\(_2\) solution in drops until in excess
(iii) freshly precipitated AgCI in excess.
(c) A salt sample was suspected to be either Na\(_2\)CO\(_2\) or NaHCO\(_3\). A student who was required to identify it tested a portion for solubility in water and then for effect on litmus paper.
(i) What was observed in each case?
(ii) Give the reason why the student's procedure was unsuitable
(iii) Describe briefly how you would have identified the salt.
medium Difficulty
Verified Correct Answer: Option
Chemical Principles & Mechanism
(a)(i) X is better stored in fume cupboard/chamber
(ii) Y should be stored in coloured bottles or dark cupboard
(b)(i) it turns red litmus paper to blue, but no action on blue litmus paper.
(ii) A white gelatinous precipitate is formed and it will be insoluble in ammonium solution.
(iii) A white freshly precipitate of the freshly prepared of AgCl will dissolve.
(c)(i) Na\(_2\)CO\(_3\) is neutral to litmus but NaHCO\(_{3(aq)}\) Will turn blue litmus to red.
(ii) The procedure was not suitable because the two substances are soluble in water and hence they cannot be detected using solubility.
(iii) Na\(_2\)CO\(_3\) and NaHCO\(_3\) should be separately heated strongly. NaCO\(_3\) is stable under heat but NaHCO\(_3\) vill decompose given off H\(_2\)O and CO\(_2\) and leaving Na\(_2\)CO\(_3\). The water and CO\(_2\) can be tested to confirm which is which.
Source: Myschool Past Questions Archive (Record #60109)
English Language
UTME / JAMB 2002
Reading Comprehension, Summary & Composition
From the passage, which of these is a disadvantage of defining by enumerating?
A
enumeration always leave doubts in the mind of the speaker
B
the words or objects listed may not all share similar characteristics
C
the property and examples enumerated may not be all inclusive
D
many important members of the group may be left out of the enumeration
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Official Exam / Past Question Archive
English Language
NECO SSCE 2002
Concord (Subject-Verb Agreement)
Solution
Choose from the options A to E the one that MOST APPROPRIATELY COMPLETES THE SENTENCE
The Chairman with all his Councilors______ honoured last weekend
A
Are
B
have been
C
is
D
was
E
were
medium Difficulty
Verified Correct Answer: Option D
Grammar & Contextual Explanation
When any of these words: with, along with, together with, as well as, in addition to, including, no less than, etc. joins a compound subject, the form of the verb is singular. Therefore 'was' should be the verb that accompanies the compound subject: "The chairman with all his councillors".
Source: Myschool Past Questions Archive (Record #43365)
English Language
NECO SSCE 2002
Antonyms (Opposite in Meaning)
Solution
Choose from the options A to E the one that is MOST NEARLY OPPOSITE IN MEANING to the underlined word.
Religious people are expected to be ascetic.
A
Extravagant
B
flamboyant
C
ostentatious
D
Pious
E
selfless
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
The word ascetic refers to someone who practices severe self-discipline and avoids luxury or comfort. So, its opposite would be someone who indulges in luxury or excessive spending. Extravagant describes someone who spends or uses resources in a wasteful or luxurious way, which is the opposite of ascetic.
Source: Myschool Past Questions Archive (Record #43366)
English Language
NECO SSCE 2002
Lexis, Structure & Register (Cloze & Vocabulary)
Choose from the options labelled A to E, the one that contains the sound represented by the given symbol.
| b|
A
bag
B
comb
C
debt
D
lamb
E
limb
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #43367)
English Language
NECO SSCE 2002
Oral English: Stress, Rhymes & Intonation
Solution
Choose from the options labeled A to E, the most appropriate question to the given sentence containing an emphatic stress word. The emphatic stress word is written in CAPITAL letters.
Farmers PLANT crops during the rainy season.
A
Do farmers harvest crops during the rainy season?
B
Do farmers level crops during the rainy season?
C
Do farmers plant crops before the rainy season?
D
Do farmers plant crops during the dry season?
E
Do labourers plant crops during the rainy season?
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
The rule is to select a question that contrasts with the emphasized word/ or the word in capital letters. In this case, the word 'plant' contrasts with 'harvest'. Therefore the answer is A. Do the farmers harvest crops during the rainy season?
Source: Myschool Past Questions Archive (Record #43368)
English Language
NECO SSCE 2002
Synonyms (Nearest in Meaning)
Choose from the options A to E the one that is the NEAREST IN MEANING T0 THE UNDERLINED WORD.
The lady ignores strictures on her mannerisms.
A
General complaints
B
public outrage
C
sever criticisms
D
unreasonable comments
E
useless remarks
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #43369)