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Chemistry UTME / JAMB 2014 Stoichiometry, Mole Concept & Volumetric Analysis
Fluorine does not occur in the free state in nature because
A
it is a poisonous gas
B
it belongs to the halogen family
C
it is inert
D
of its high reactivity
medium Difficulty
Chemistry UTME / JAMB 2014 Electrolysis & Electrochemical Cells
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because
A
sodium is formed at the anode
B
chlorine is formed at the anode
C
sodium does not react with platinum
D
chlorine does not react with platinum
medium Difficulty
Chemistry UTME / JAMB 2014 Electrolysis & Electrochemical Cells
In the electrolytic extraction of calcium from calcium chloride, the cathode is
A
zinc
B
graphite
C
platinum
D
iron
medium Difficulty
Chemistry UTME / JAMB 2014 Metals, Transition Elements & Extraction
A compound that gives a brick-red colour to a non-luminous flame is likely to contain
A
copper ions
B
sodium ions
C
calcium ions
D
Potassium ions
medium Difficulty
Chemistry UTME / JAMB 2014 Stoichiometry, Mole Concept & Volumetric Analysis
A few drops of NaOH solution was added to an unknown salt forming a white precipitate which is insoluble in excess solution. The cation likely present is
A
Zn2+
B
Pb2+
C
Ca2+
D
Al3+
medium Difficulty
Chemistry UTME / JAMB 2014 Stoichiometry, Mole Concept & Volumetric Analysis
The general formula of haloalkanes where X represents the halide is
A
Cn H 2n-1X.
B
C nH 2nX.
C
C nH 2n+2 X
D
C nH 2n+1X
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
The alkanol obtained from the production of soap is
A
propanol
B
ethanol
C
glycerol
D
methanol
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry I: Hydrocarbons & Crude Oil
Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
A
isoprene
B
polythene
C
ethanol
D
benzene
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry I: Hydrocarbons & Crude Oil
Due to the unstable nature of ethyne, it is stored by dissolving in
A
ethane-1,2-diol
B
propanol
C
ethanoic acid
D
propanone
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
The process of converting starch to ethanol is
A
cracking
B
distillation
C
fermentation
D
oxidation
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
The polymer used in making car rear lights is
A
perspex
B
bakeelite
C
polystyrene
D
polyacrylonitrile
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry II: Functional Groups, Polymers & Biomolecules
CH3COOC2H5(1) + H2O(1) ⇌ CH 3COOH (aq) + C 2H 5OH (aq) The purpose of H+ in the reaction above is to
A
increase the yield of products
B
maintain the solution at a constant PH
C
increase the rate of the hydrolysis
D
decrease the rate of the reverse reaction
medium Difficulty
Chemistry UTME / JAMB 2014 Stoichiometry, Mole Concept & Volumetric Analysis
A hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its molecular formula. [C = 12, H = 1]
A
C2H6
B
C3H8
C
C3H4
D
C6H6
medium Difficulty
Chemistry UTME / JAMB 2014 Stoichiometry, Mole Concept & Volumetric Analysis
Polystyrene is widely used as packaging materials for fragile objects during transportation because of its
A
lightness
B
low density
C
high density
D
high compressibility
medium Difficulty
Chemistry UTME / JAMB 2014 Organic Chemistry I: Hydrocarbons & Crude Oil
The process of converting linear alkanes to branched chain and cyclic hydrocarbons by heating in the presence of a catalyst to improve the quality of petrol is referred to as
A
refining
B
cracking
C
reforming
D
blending
medium Difficulty
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