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Chemistry
UTME / JAMB 2013
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
A primary amide is generally represented by the formula
A
RCOOR
B
RCONH 2
C
RCONHR
D
RCONR 2
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 #27461)
Chemistry
UTME / JAMB 2013
Organic Chemistry I: Hydrocarbons & Crude Oil
Which of the following fraction is used as raw material for the cracking process?
A
kerosine
B
lubricating oil
C
bitumen
D
diesel oils
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 #27462)
Chemistry
UTME / JAMB 2013
Stoichiometry, Mole Concept & Volumetric Analysis
An organic compound contains 60% carbon, 13.3% hydrogen and 26.7% oxygen. Calculate the empirical formula
rn(C=12,H =1, O=16)
A
C 5H 12O
B
C 3H 8O
C
C 6H 13O 2
D
C 4H 9O
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 #27463)
Chemistry
UTME / JAMB 2013
Atomic Structure, Orbitals & Nuclear Chemistry
The coloured nature of transition metal ions are associated with their partially filled
A
f- orbital
B
s- orbital
C
p-orbital
D
d-orbital
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 #27456)
Chemistry
UTME / JAMB 2013
Stoichiometry, Mole Concept & Volumetric Analysis
Aluminium containers are frequently used to transport trioxonitrate (V) acid because aluminium
A
has a silvery-white appearance
B
has a low density
C
does not react with the acid
D
does not corrode
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 #27457)
Chemistry
UTME / JAMB 2013
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
2- methylpropan-2-ol is an example of a
A
dihydric alkanol
B
tertiary alkanol
C
secondary alkanol
D
primary alkanol
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 #27458)
Chemistry
UTME / JAMB 2013
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
The reaction between ammonia and ethyl ethanoate produces
A
propanol and ethanamide
B
propanol and propanamide
C
ethanol and propanamide
D
ethanol and ethanamide
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 #27459)
Chemistry
UTME / JAMB 2013
Organic Chemistry I: Hydrocarbons & Crude Oil
The decarboxylation of ethanoic acid will produce carbon (IV)oxide and
A
methane
B
ethane
C
propane
D
butane
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 #27460)
Chemistry
UTME / JAMB 2013
Kinetic Theory of Matter & Gas Laws
Diagram
From the diagram above, an ideal gas is represented by
Attached Figure / Diagram
A
Z
B
W
C
X
D
Y
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 #31679)
Chemistry
UTME / JAMB 2013
Reaction Rates & Chemical Equilibrium
Diagram
Solution
In the graph above, the activation energy of the catalyzed reaction is
Attached Figure / Diagram
A
100KJ
B
300KJ
C
250KJ
D
200KJ
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
In the graph above, the activation energy of the catalyzed reaction is shown by the curve with the broken lines. Tracing it to the peak of the hump and extrapolating, we have 200kJ. However, to find the activation energy, it is the difference between the energy of the peak of the hump and energy of the reactant.
i.e Activation energy = Energy at the peak of the hump - energy of the reactant
= 200 - 100
= 100kJ
Source: Myschool Past Questions Archive (Record #31680)
Chemistry
UTME / JAMB 2013
Reaction Rates & Chemical Equilibrium
Diagram
Choose the correct option from the graph above . 3Fe(S) + 4H2O(g) ⇌ Fe3O4(s) + 4H2(g). The equilibrium constant, K, of the reaction above is represented as
Attached Figure / Diagram
A
A
B
B
C
C
D
D
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 #31691)
Chemistry
UTME / JAMB 2013
Stoichiometry, Mole Concept & Volumetric Analysis
Diagram
Solution
The IUPAC nomenclature for the compound above is
Attached Figure / Diagram
A
4-methylpent-1-ene
B
3-methylpent-2-ene
C
2-methylpent-1ene
D
2-methylpent-4-ene
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
The IUPAC name of the compound in question is 4-methylpent-1-ene.
Source: Myschool Past Questions Archive (Record #31696)
Chemistry
UTME / JAMB 2013
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Diagram
Use the above option to answer this question. The dehydration of ammonium salt of alkanoic acids produces a compound with the general formula
Attached Figure / Diagram
A
A
B
B
C
C
D
D
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 #31700)
Chemistry
UTME / JAMB 2013
Acids, Bases, pH & Salts
Diagram
Solution
Use the following option above to answer this question. Which of the following compounds in solution will turn red litmus paper blue?
Attached Figure / Diagram
A
A
B
B
C
C
D
D
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
RNH\(_2\), a general representation for an amine, turns red litmus paper blue because amines are basic in nature. When an amine is dissolved in water, it acts as a base, accepting a proton (H+) and forming a conjugate acid and a hydroxide ion (OH-). The presence of hydroxide ions makes the solution alkaline, and alkaline solutions turn red litmus paper blue.
Source: Myschool Past Questions Archive (Record #31703)
Chemistry
UTME / JAMB 2013
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Diagram
The compound above is an
Attached Figure / Diagram
A
alkanone
B
alkanoate
C
alkanal
D
akanol
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 #31705)