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Chemistry
UTME / JAMB 1984
Stoichiometry, Mole Concept & Volumetric Analysis
An aqueous solution of a metal salt, M, gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also gives a white precipitate which dissolves in excess ammonia. Therefore cartion in M is
A
Zn ++
B
Ca++
C
Ai+++
D
Pb++
E
Cu++
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 #27673)
Chemistry
UTME / JAMB 1984
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
At S. T. P how many litres of hydrogen can be obtained from the reaction of 500 cm\(^3\) of 0.5 M H\(_2\)SO\(_4\) with excess zinc metal?
(Gram molecular volume of H\(_2\) = 22.4 dm\(^3\))
A
22.4 dm 3
B
11 . 2 dm 3
C
6. 5 dm 3
D
5. 6 dm 3
E
0. 00 dm 3
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Zn + H\(_2\)SO\(_4\) → ZnSO\(_4\) + H\(_2\)
1mole : 1mole
n = \(\frac{CV}{1000}\)
= \(\frac{{0.5}\times{500}}{1000}\)
= 0.25 mole : 0.25 mole
n = \(\frac{Volume}{Molar Volume}\)
0.25 = \(\frac{V}{22.4}\)
V = 0.25 x 22.4
V = 5.6 dm\(^3\)
Source: Myschool Past Questions Archive (Record #27674)
Chemistry
UTME / JAMB 1984
Water, Solutions & Solubility
Diagram
The solubility curves of four substances are shown in the figure above. Which of the four substances would crystallize from a saturated solution cooled from 353K(80oC)to 323K(50C)?
Attached Figure / Diagram
A
P and Q
B
P and R
C
P and S
D
R and S
E
Q and R
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 #31323)
Chemistry
UTME / JAMB 1984
Kinetic Theory of Matter & Gas Laws
Diagram
Which of the curves shown in the figure given represents the relationships between the volume(V) and pressure(P) of an ideal gas at constant temperature
Attached Figure / Diagram
A
1
B
2
C
3
D
4
E
1 and 3
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 #31325)
Chemistry
UTME / JAMB 1984
Chemical Energetics & Thermochemistry
Diagram
Solution
The diagram above (Fig.3) shows the energy profile for the reaction A + B + = C + D From this diagram, it is clear that the reaction is
Attached Figure / Diagram
A
spontaneous
B
isothermal
C
adiabatic
D
exothermic
E
endothermic
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
..
Source: Myschool Past Questions Archive (Record #31326)
Chemistry
UTME / JAMB 1984
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Diagram
Solution
The name of the compound above is
Attached Figure / Diagram
A
acetic acid
B
propanal
C
propanol
D
ethanoic acid
E
propanoic acid
medium Difficulty
Verified Correct Answer: Option E
Chemical Principles & Mechanism
the compound is propanoic acid, it contains the carboxyl group COOH.
Source: Myschool Past Questions Archive (Record #31327)
Chemistry
UTME / JAMB 1984
Organic Chemistry I: Hydrocarbons & Crude Oil
Diagram
Solution
Use the diagram above to answer this question
Which of the following structural formula is NOT isomeric with the others?
Attached Figure / Diagram
A
A
B
B
C
C
D
D
E
E
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Isomers have the same molecular structures(but different structures).
so whatever the structures are, they must contain the same amount of carbon, the same amount of hydrogen, and the same amount of oxygen as in this case.
Just count the number of hydrogens (including the hydrogen in OH).
you should get 10 hydrogens from A, B, C, and E.
in total, you should have C4H10O. options A, B, C, and E have this in common. but
the option D has only C4H8O.
Source: Myschool Past Questions Archive (Record #31331)
Chemistry
UTME / JAMB 1984
Organic Chemistry I: Hydrocarbons & Crude Oil
Diagram
The I.U.P.A.C name for the compound is
Attached Figure / Diagram
A
isopropylethene
B
acetylene
C
3- methylbutane
D
2-methylbutane
E
5-methylpentane
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 #31334)
Chemistry
UTME / JAMB 1984
Organic Chemistry I: Hydrocarbons & Crude Oil
The I.U.P.A.C name for the compound is
A
isopropylethene
B
acetylene
C
3- methylbutane
D
2-methylbutane
E
5-methylpentane
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: Official Exam / Past Question Archive
English Language
UTME / JAMB 1984
Lexis, Structure & Register (Cloze & Vocabulary)
From the alternatives provided in the questions given, select the one which most appropriately completes the sentence. After we have taken our share we shall give ....... to them
A
their
B
their's
C
theirs
D
there's
E
there
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
UTME / JAMB 1984
Concord (Subject-Verb Agreement)
From the alternatives provided in the questions given, select the one which most appropriately completes the sentence. The principal went to buy some ..... for the physics laboratory.
A
equipment
B
pieces of equipments
C
equipments
D
items of equipments
E
list of equipments
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 #40374)
English Language
UTME / JAMB 1984
Spelling, Punctuation & Word Formation
From the alternatives provided in the questions given, select the one which most appropriately completes the sentence. The ..... should make .... for them as soon as possible.
A
committee/accommodation
B
committe/accomodation
C
committee/accomodation
D
committee/accmodation
E
committee/accomondation
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 #40375)
English Language
UTME / JAMB 1984
Lexis, Structure & Register (Cloze & Vocabulary)
From the alternatives provided in the questions given, select the one which most appropriately completes the sentence. It was a funny episode, so I ......
A
can't help to laugh
B
couldn't help laughing
C
couldn't help laugh
D
couldn't help to laugh
E
can't help laughing
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #40376)
English Language
UTME / JAMB 1984
Lexis, Structure & Register (Cloze & Vocabulary)
From the alternatives provided in the questions given, select the one which most appropriately completes the sentence. After we have taken our share we shall give ....... to them
A
their
B
their's
C
theirs
D
there's
E
there
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 #40377)
Biology
UTME / JAMB 1984
Adaptation & Evolution
Solution
The mouth parts of the housefly are adapted for
A
Lapping and sponging
B
Sucking and chewing
C
Piercing and sucking
D
Chewing and lapping
E
Biting and chewing
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
House flies can be easily identified by the four dark, longitudinal stripes on top of the thorax, or middle body region. They vary in length from l/8-l/4 of an inch. Their mouth parts are adapted for sponging up liquids; they cannot bite. These flies can only ingest liquid food. They feed on attractive solid food by regurgitating saliva on it. The saliva liquifies the solid material which is then sponged up with the proboscis. They require water since they are continually salivating and voiding liquids. Fly specks seen on many surfaces visited by house flies are the excreted wastes.
Source: Myschool Past Questions Archive (Record #2562)