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English Language
WAEC / WASSCE 2005
Concord (Subject-Verb Agreement)
Solution
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
''.............we rather go home?'' he asked
A
Shouldn't
B
Can't
C
Won't
D
Mustn't
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
“Shouldn’t we rather go home?”
This phrasing is used to suggest or propose an action in a polite and somewhat rhetorical manner. We use "can't" when we are questioning someone's ability to do something. "Won't" is more about future actions and does not fit well in this context, especially with the use of the word "rather" in the sentence which suggests that the speaker is trying to make a suggestion rather than talk about future actions.
Source: Myschool Past Questions Archive (Record #25456)
English Language
WAEC / WASSCE 2005
Concord (Subject-Verb Agreement)
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
I know that song very well; we............it everyday when I was in primary school
A
sang
B
had sung
C
have sung
D
sing
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 #25457)
English Language
WAEC / WASSCE 2005
Concord (Subject-Verb Agreement)
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
They ...........the competition when we arrived
A
begun
B
have begun
C
had begun
D
begin
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 #25458)
English Language
WAEC / WASSCE 2005
Concord (Subject-Verb Agreement)
From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences.
If you....... early, you will get there before nightfall.
A
left
B
are leaving
C
had left
D
leave
medium Difficulty
Verified Correct Answer: Option D
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #25459)
Chemistry
WAEC / WASSCE 2005
Atomic Structure, Orbitals & Nuclear Chemistry
The electronic configuration of an element X is 1s22s 22s63p 2 3p4. It can be deduced that X
A
Belongs to group 6 of the Periodic Table
B
Belongs to group IV of the Periodic Table
C
has 3 unpaired electrons in its atom
D
has relative molecular mass of 16
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #37068)
Chemistry
WAEC / WASSCE 2005
Atomic Structure, Orbitals & Nuclear Chemistry
Solution
What is the mass number of an element having 20 neutrons, 15 protons and 15 electrons?
A
15
B
30
C
35
D
50
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
Mass number = Protons = Neutrons = 15 + 20 = 35
Source: Myschool Past Questions Archive (Record #37069)
Chemistry
WAEC / WASSCE 2005
Periodic Table & Periodicity
Solution
Which of the following sets of elements are arranged in order of decreasing atomic size in the Periodic Table?
A
6C, 4Be, 7N,8 O
B
4Be,6 C,7 N,8 O
C
8O, 7 N, 6C, 4Be
D
7N, 8O, 6C,4Be
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
\(_4Be\), \(_6C\), \(_7N\), \(_8O\) is the answer because atomic size decreases across the period and increases down the group due to the effect of the positively charged nucleus./ increasing atomic numbers.
Source: Myschool Past Questions Archive (Record #37070)
Chemistry
WAEC / WASSCE 2005
Atomic Structure, Orbitals & Nuclear Chemistry
Which of the following changes is characteristic of an alpha-particle emission?
A
the nucleus loses two protons and two neutrons
B
a proton combines with an electron giving off heat
C
the nucleus splits into two equal parts
D
four neutrons are lost
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #37071)
Chemistry
WAEC / WASSCE 2005
Oxidation, Reduction & Redox Reactions
An element X has an atomic number of 16. What is its most likely oxidation state in its binary compounds?
A
-3
B
-2
C
+2
D
+4
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #37072)
Chemistry
WAEC / WASSCE 2005
Atomic Structure, Orbitals & Nuclear Chemistry
An element which can exist in two or more forms in the same physical state, exhibits
A
isotopy
B
structural isomerism
C
allotropy
D
variable valency
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #37073)
Chemistry
WAEC / WASSCE 2005
Acids, Bases, pH & Salts
Which of the following can be used to predict the type of bonding in HCI?
A
pH value
B
Electronegativity difference
C
Heat of neutralization
D
Heat of solution
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #37074)
Chemistry
WAEC / WASSCE 2005
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following molecules has a linear structure?
A
NH3
B
H2O
C
CO2
D
CH4
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #37075)
Chemistry
WAEC / WASSCE 2005
Water, Solutions & Solubility
The volume occupied by a given mass of gas depends on its
A
diffusion rate
B
temperature and pressure
C
degree of solubility
D
relative density
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #37076)
Chemistry
WAEC / WASSCE 2005
Reaction Rates & Chemical Equilibrium
In which of the following reactions is the position of equilibrium not affected by an increase in pressure?
A
3Fe(s) + 4H2O(g) ⇌ Fe3O4(s) + 4H2(g)
B
2NO2(g) ⇌ N2O 4(g)
C
3H2(g) + N2(g) ⇌ 2NH3(g)
D
2SO2(g) + O2(g) ⇌ 2SO3(g)
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #37077)
Chemistry
WAEC / WASSCE 2005
Reaction Rates & Chemical Equilibrium
The activation energy of a reaction can be altered by
A
adding a reducing agent
B
applying a high pressure
C
using a catalyst
D
changing the temperature
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #37078)