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Which of the following compounds is used as a gaseous fuel?
ACH 3-COO-CH2-CH3
BCH 3-CH 2-CH 2-CH 3
CCHCI 3
DCH 3-CH2-COOH
ECH3-C=CH
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Question 2
waec1998
A positive reaction to Fehling's test indicates the presence of
Astrach
Breducing sugars
Coxidizing agents
Dalkanoic acids
Ealkanols
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Question 3
waec1998
The products of the reaction between CH3CH 2COOH and CH3OH are H 2
O and
ACH 3CH2COOCH3
BCH3CH 2COOCH 2CH 3
CCH3CH2CH2COOH
DCH3CH2CH2OH
ECH3COOH
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Question 4
waec1998
When alkanols react with sodium, the ga evolved is
Ahydrogen
Boxygen
Cmethane
Dethyne
Ecarbon (IV) oxide
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Question 5
waec1998
Dehydration of ethanol produces
Aethanoic acid
Bpropan-1,2,3-triol
Cethene
Dethanal
Emethanol
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Question 6
waec1998
Petrol consists mainly of
Apolymers
Balkanoates
Chydrocarbons
Dalktanols
Ealkenes
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Question 7
waec1998
Which of the following alkanes has the highest boiling point?
Apentane
Bethane
Cpropane
Dbutana
Ehexane
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Question 8
waec1998
The liquid product of the destructive distillation of coal is
Akerosene
Bethanol
Cammoniacal liquor
Dparaffin oil
Eaqueous ammonia
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Question 9
waec1998
Which of the following can undergo both addition reactions and substitution reactions?
ABenzene
BPentane
CPropene
DHexane
EEthene
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Question 10
waec1998
A device used in the laboratory for intermittent production of gases without heating is
ALeibing condenser
Baspirator
Cdelivery tube
Dinverted funnel
EKipp's apparatus
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Question 11
waec1998
Metals are said to be malleable because they
Aare good conductors heat
Bare good conductors of electricity
Ccan be beaten into sheets
Dcan be alloyed
Ecan be polished
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Question 12
waec1998
Aluminium is extracted from
Amagnetite
Bcryolite
Cbauxite
Dcassiterite
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Question 13
waec1998
Rusting of iron is an example of
Adeliquescence
Bdecomposition
Cdisplacement reaction
Dredox reaction
Ereversible reaction
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Question 14
waec1998
Two metallic ions commonly present in hard water are
ACa2+ and Zn2+
BCu2+ and Na+
CMg2+ and Ca2+
DFe2+ and Na+
EZn2+ and Cu2+
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Question 15
waec1998
The spontaneity of a chemical reaction is determined by the change in the
Aconcentration of the reactants
Btemperature of the system
Cfree energy of the system
Dpressure applied to the system
Evolume of the reactants
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Question 16
waec1998
Which of the following can be added to dissolve the precipitate formed in the reaction represented by the following equation? CaCl2(aq) + H2C2O 4(s) ⇌ CaC 2O2
ACalcium chloride solution
BConcentrated hydrochloric acid
CEthanol
DEthanedioc acid
EAqueous ammonia
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Question 17
waec1998
Pipe-borne water is usually chlorinated in order to
Aimprove the teste of the water
Bremove the hardness in the water clear
Ccoagulate sediments in the water
Dkill harmful bacteria in the water
Emake the water clear and colourless
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Question 18
waec1998
Substances which absorb water from the atmosphere without dissolving in it are sid to be
Aanhydrous
Bhygroscopic
Cinsolube
Dhydrated
Eefflorescent
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Question 19
waec1998
How many electrons are removed from Cr2- when it is oxidized to CrO42-?
Ao
B2
C4
D8
E10
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Question 20
waec1998
What mass of copper would be deposited by a current of 1. 0 ampere passing for 965 seconds through copper (ll) tetraoxosulphate (IV) solution? [Cu = 63.5; 1F = 96500C]
