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 9061–9075 of 14893 verified questions
Sort by:
Chemistry
UTME / JAMB 1999
Electrolysis & Electrochemical Cells
The pair of metals in the reactivity series that are usually extracted by the electrolysis of their ores is
A
magnesium and zinc
B
magnesium and calcium
C
copper and zinc
D
lead and calcium
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 #1471)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
A metal that can be extracted from cassitertite is
A
cacium
B
magnesium
C
tin
D
copper
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 #1472)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following metals is passive to concentrated trioxonitrate (V) acid?
A
Iron
B
Tin
C
Copper
D
Zinc
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 #1473)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
The hydrocarbon that burns in air with a sooty flames is
A
C2H6
B
C3H8
C
C4H10
D
C6H6
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 #1474)
Chemistry
UTME / JAMB 1999
Organic Chemistry I: Hydrocarbons & Crude Oil
2-methylprop-1-ene is an isomer of
A
but-2-ene
B
pent-1-ene
C
2-methylbut-2-ene
D
2-methylbut-1-ene
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 #1475)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following is a solvent for perfumes?
A
C5H12
B
C4H6
C
CH3COOH
D
C2H5OH
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 #1476)
Chemistry
UTME / JAMB 1999
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
When excess ethanol is heated to 145oC in the presence of concentrated H2SO4, the product is
A
ethyne
B
diethyl sulphate
C
diethyl ether
D
acetone
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 #1477)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
POlyvinyl chloride is used to produce
A
bread
B
pencils
C
ink
D
pipes
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 #1478)
Chemistry
UTME / JAMB 1999
Organic Chemistry II: Functional Groups, Polymers & Biomolecules
An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be
A
alkene
B
alkanal
C
alkanone
D
alkanoic acid
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 #1479)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
When the two end alkyl groups ethyl ethanoate are interchange, the compound formed is known as
A
methyl ethanoate
B
ethyl propanaote
C
methyl propanoate
D
propyl ethanoate
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 #1480)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Which of the compounds above would react to take up two molecules of bromine durng bromination?
A
l only
B
lll only
C
l and ll only
D
ll and lll only
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: Official Exam / Past Question Archive
Chemistry
UTME / JAMB 1999
Water, Solutions & Solubility
Diagram
From the diagram above the mass of crystals deposited when 1 dm 3 of a saturated solution of NaCl is cooled from 80 oC to 60oC is
[Na = 23, Cl = 35.5]
Attached Figure / Diagram
A
117.00 g
B
58.50 g
C
11.70 g
D
5.85 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 #31567)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Diagram
In the diagram above, Y is a mixture of
Attached Figure / Diagram
A
calcium hydroxide and ammonium chloride
B
calcuim hydroxide and sodium chloride
C
sodium chloride and ammonuim trioxonitrate (V)
D
sodium dioxonitrate (lll) and ammouium chloride
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 #31569)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Diagram
Solution
Use the table above to answer this question . The element that is likely to participate in covalent rather than ionic bonding is
Attached Figure / Diagram
A
Z
B
Y
C
X
D
W
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
the element likely to participate in covalent rather than ionic bonding is X, covalent bonding is a type of bonding that involves the participants contributing an equal number of electrons into a shared pair.
Source: Myschool Past Questions Archive (Record #31572)
Chemistry
UTME / JAMB 1999
Stoichiometry, Mole Concept & Volumetric Analysis
Diagram
Use the table above to answer this question .The least reactive element is
Attached Figure / Diagram
A
W
B
X
C
Y
D
Z
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 #31573)