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Chemistry
WAEC / WASSCE 2016
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following elements would produce coloured ion in agueous solution?
A
Calcuim
B
Copper
C
Magnesuim
D
Sodium
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 #45093)
Chemistry
UTME / JAMB 2016
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Diagram
The functional groups present in the compound above are
Attached Figure / Diagram
A
Alkene and halo-group
B
Hydroxyl and chloro-group
C
Alkene and chloro-group
D
Hydroxyl and halo-group
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #44640)
Chemistry
UTME / JAMB 2016
Reaction Rates & Chemical Equilibrium
Diagram
In the diagram above, X is the
Attached Figure / Diagram
A
Enthalphy
B
Activated complex
C
Activation energy
D
Enthalphy change
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #44641)
Chemistry
UTME / JAMB 2016
Chemical Energetics & Thermochemistry
Diagram
The diagram represents
Attached Figure / Diagram
A
A spontaneous reaction
B
An exothermic reaction
C
A non-spontaneous
D
An endothermic reaction
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 #44642)
Chemistry
UTME / JAMB 2016
Acids, Bases, pH & Salts
Diagram
The curve depicts titration between a strong acid of pH
Attached Figure / Diagram
A
Strong acid and strong base
B
Strong acid and weak base
C
Weak acid and weak base
D
Weak acid and strong base
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 #44643)
Chemistry
UTME / JAMB 2016
Kinetic Theory of Matter & Gas Laws
Diagram
Solution
From the diagram above, an ideal gas can be represented by
Attached Figure / Diagram
A
K
B
M
C
L
D
N
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
see diagram in textbook
Source: Myschool Past Questions Archive (Record #44644)
Chemistry
WAEC / WASSCE 2016
Reaction Rates & Chemical Equilibrium
The minimum amount of energy required for effective collisions between reacting particles is known as
A
Activation energy
B
Bond energy
C
Kinetic energy
D
Potential energy
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 #45094)
Chemistry
WAEC / WASSCE 2016
Chemical Bonding & Intermolecular Forces
The bond formed between H2O and H+ to form the hydroxonium H3O+ is
A
Dative
B
Covalent
C
Electrovalent
D
Ionic
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 #45095)
Chemistry
WAEC / WASSCE 2016
Particulate Nature of Matter, Laws & Formulae
An element X froms the following oxides X2O, XO and XO2. This phenomenon illustrates the law of________?
A
Conservation of mass
B
Definite proportion
C
Mass action
D
Multiple proportion
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #45096)
Chemistry
WAEC / WASSCE 2016
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
How many moles of oxygen would contain 1.204 x 1024 molecules?
[Avogadro's constant (NA) = 6.02 x 1023]
A
1
B
2
C
3
D
4
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
6.02 x 1023 molecules is 1mole
1.204 x 1024 molecules will be......
\(\frac{1.204 \times 10^24 \times 1}{6.02 \times 10^23}\)
\(\frac{1.204 \times 10}{6.02}\) = \(\frac{12.04}{6.02}\) = 2moles
Source: Myschool Past Questions Archive (Record #45097)
Chemistry
WAEC / WASSCE 2016
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following statements about solids is correct?
A
Solid particles are less orderly than those of a liquid
B
Solid have lower densities than liquids
C
Solid particles have greater kinetic energies than those of liquids
D
Solid particles cannot be easily compressed
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #45098)
Chemistry
WAEC / WASSCE 2016
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
Which of the following apparatus can be used to measure a specific volume of a liquid accurately?
A
Beaker
B
Conical flask
C
Measuring cyclinder
D
Pipette
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
A pipette is generally more accurate than a measuring cylinder for measuring specific volumes of liquid. Pipettes are designed for precise transfer and measurement of specific volumes, while measuring cylinders are less precise due to their larger meniscus and less accurate calibration.
Source: Myschool Past Questions Archive (Record #45099)
Chemistry
WAEC / WASSCE 2016
Particulate Nature of Matter, Laws & Formulae
The general gas equation \(\frac{PV}{T}\) = K is a combination of
A
Boyle's and Charles' laws
B
Boyle's and Graham's laws
C
Charles' and Graham's laws
D
Dalton's and Graham's laws
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 #45100)
Chemistry
WAEC / WASSCE 2016
Kinetic Theory of Matter & Gas Laws
The spreading of the scent of a flower in a garden is an example of_____?
A
Brownian motion
B
Diffusion
C
Osmosis
D
Tynadal effect
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 #45103)
Chemistry
WAEC / WASSCE 2016
Organic Chemistry I: Hydrocarbons & Crude Oil
Propane carbon(IV)oxide diffuse at the same rate because [H = 1.00, C = 12.0, O = 16.0]
A
They are both gases
B
Their molecules contain carbon
C
They have the same relative molecular mass
D
Both are denser than air
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 #45147)