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Chemistry UTME / JAMB 1980 Stoichiometry, Mole Concept & Volumetric Analysis
The best way of collecting chlorine is?
A
by downward displacement of air
B
by upward displacement of air
C
over water
D
under water
E
over mercury
medium Difficulty
Chemistry UTME / JAMB 1980 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Cellulose and starches can be classified as one of the following?
A
sugars
B
sucrose
C
hydrocarbons
D
carbohydrates
E
isomers
medium Difficulty
Chemistry UTME / JAMB 1980 Stoichiometry, Mole Concept & Volumetric Analysis
If one of the following oxides is heated with hydrogen or carbon using a bunsen burner, it is not reduced to the metal. Which one is it?
A
Lead oxide
B
Magnesium oxide
C
Copper oxide
D
Tin oxide
E
Iron oxide
medium Difficulty
Chemistry UTME / JAMB 1980 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
A mixture of ethanol, sodium dichromate, and water is allowed to drop gradually into a boiling solution containing one part concentrated H2SO 4 and the liberate gas is collected by cooling it with ice water to give a liquid. This liquid is?
A
ethanoic acid
B
acetaldehyde
C
ethyl acetate
D
methanol
E
ethylene
medium Difficulty
Chemistry UTME / JAMB 1980 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
Detergents are more advantageous than soaps in hard water districts because
A
on treatment with hard water they either form soluble calcium salts or do not react with calcium ion
B
on treatment with hard water they form soluble calcium salts
C
on treatment with hard water they form sodium salts
D
on treatment with hard water they are converted into soaps
E
on treatment with hard water they form more lather than soaps does
medium Difficulty
Chemistry UTME / JAMB 1980 Periodic Table & Periodicity
In the above experiment X is?
Attached Figure / Diagram
Question diagram
A
pure nitrogen
B
a mixture of nitrogen and oxygen
C
a mixture of nitrogen and carbondioxide
D
a mixture of oxygen and inert gases
E
a mixture of nitrogen and inert gases
medium Difficulty
Chemistry UTME / JAMB 1980 Stoichiometry, Mole Concept & Volumetric Analysis
The IUPAC name for the compound is
Attached Figure / Diagram
Question diagram
A
2,3-dimethylpent-2,3-ene
B
2, 3- dimethylpent-2-ene
C
3, 4-dimethylpent-3-ene
D
3,4-dimethylpentene
E
3,4-dimethlhept-2-ene
medium Difficulty
Chemistry UTME / JAMB 1980 Stoichiometry, Mole Concept & Volumetric Analysis
Which of the following compounds will take up the molecules of bromine?
Attached Figure / Diagram
Question diagram
A
l
B
ll
C
lll
D
l and ll
E
l and lll
medium Difficulty
Chemistry UTME / JAMB 1980 Organic Chemistry I: Hydrocarbons & Crude Oil
Which of the following is the correct order in the above diagram increasing boiling point, of the isomeric \(C_{5}H_{12}\) compounds?
Attached Figure / Diagram
Question diagram
A
A
B
B
C
C
D
D
E
E
medium Difficulty
Chemistry UTME / JAMB 1980 Reaction Rates & Chemical Equilibrium
The following graph demonstrates the rate of reaction between calcium carbonate (marble)and dilute hydrochloric acid. The graph shows that the rate of reaction is initially greatest when
Attached Figure / Diagram
Question diagram
A
the initial slope of the curve is steepest and this occur when small pieces of marble are used and is due to a small surface area of reactant
B
the occur when large pieces of marble are used and is due to a small surface area of reactant
C
the initial slope of the curve is steepest and this occurs when small pieces of marble are used and is due to a large surface area of reactant
D
the initial slope of the curve is steepest and this occur when large surface area of reactant
E
the initial slope of the curve is least steep and this occur when small pieces of marble are used and is due to the increased surface area of the reactant
medium Difficulty
Chemistry UTME / JAMB 1980 Electrolysis & Electrochemical Cells
Copper sulphate solution was electrolysed using the apparatus show above. Which of the following changes are observed?
Attached Figure / Diagram
Question diagram
A
The bulb lights and copper is deposited at both electrodes
B
the bulb lights and copper is deposited at the anode and disappears from the cathode
C
the bulb lights and copper is deposited at the cathode and oxygen liberated at the anode
D
the bulb lights and copper is deposited at the cathode and disappears from the anode
E
the bulb lights but no additional changes are observed
medium Difficulty
Chemistry UTME / JAMB 1980 Organic Chemistry I: Hydrocarbons & Crude Oil
Which of the following classes of organic compounds undergoes rapid oxidation with bromine water?
A
alcohols
B
alkenes
C
carboxylic acids
D
esters
E
alkanes
medium Difficulty
Chemistry UTME / JAMB 1980 Chemical Energetics & Thermochemistry
An endothermic reaction is one during which heat is.....and can be represented by the symbol.... which of the following combinations can be used accurately to complete the above definition?
A
liberated, -\(\Delta\)H
B
liberated, +\(\Delta\)H
C
absorbed, -\(\Delta\)H
D
absorbed, +\(\Delta\)H
E
absorbed, +\(\Delta\)G
medium Difficulty
Chemistry UTME / JAMB 1980 Stoichiometry, Mole Concept & Volumetric Analysis
The following arrangement of elements in order of decreasing number of outer electrons; One of the elements is wrongly placed. Which is it? ALUMINIUM, CHLORINE, SILICON, MAGNESIUM AND SODIUM.
A
chlorine
B
aluminium
C
silicon
D
magnesium
E
sodium
medium Difficulty
Chemistry UTME / JAMB 1980 Acids, Bases, pH & Salts
Which of the following derivatives of nitrogen affords an aqueous solution having a pH of less that 7?
A
N2O
B
NO
C
NO2
D
NaNO3
E
NH3
medium Difficulty
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