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What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na=23, O=16, H=1]
A0.05 moldm-3
B0.30 moldm-3
C0.50 moldm-3
D0.40 moldm-3
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Question 612
jamb2016
The process that requires the use of hardwater in its operation is
ATanning
BBottling
CLaundry
DDyeing
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Question 613
jamb2016
Which of the following statements is true about 2-methylpropane and butane
AThey have different number of carbon atoms
BThey are members of same homologous series
CThey have the same boiling points
DThey have different chemical properties
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Question 614
jamb2016
The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using
ADilute ammonia
BBenedict's solution
CTollen's reagent
DSodium hydroxide solution
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Question 615
jamb2016
The colour of litmus in an alkaline medium is
ARed
BYellow
CPink
DBlue
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Question 616
jamb2016
The relative atomic mass of a naturally occurring lithium consisting of 90%\(\frac{7}{3}\)Li and 10%\(\frac{6}{3}\)Li is
A6.2
B6.8
C7.1
D6.9
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Question 617
jamb2016
The industrial preparation of hydrogen gas from water gas is referred to as
ABosch process
BContact process
CHaber process
DBayer Process
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Question 618
jamb2016
The ability of carbon to form long chains is referred to as
AAlkylation
BAcylation
CCarbonation
DCatenation
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Question 619
jamb2016
Ammonium chloride can be separated from its mixture with common salt by
ADistillation
BEvaporation
CDecantation
DSublimation
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Question 620
jamb2016
The principle of column chromatography is based on th ability of the constituents to
AReact with the solvent in the column
BReact with each other in the solvent in the column
CDissolve in each other in the column
DMove at different speeds in the column
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Question 621
jamb2016
The monomer of nylon is
AHydroxybenzene
BHexanedioic acid
CBenzene -1,-4-dicarboxylic acid
DEthane-1,2-diol
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Question 622
jamb2016
In the laboratory preparation of chlorine from concentrated hydrochloric acid in the presence of potassuim tetraoxomanganate(VII) the produced is dried by passing it through
AConcentrated tetraoxosulphate (VI) acid
BAnhydrous calcium chloride
CCalcium oxide
DSodium hydroxide
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Question 623
jamb2016
The enzyme used in the hydrolysis of starch to dextrin and maltose is
AZymase
BSucrase
CAmylase
DLactase
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Question 624
jamb2016
The condition required for corrosion to take place is the presence of
AOxygen and Carbon (IV) oxide
BWater and Oxygen
CWater and Carbon (IV) oxide and Oxygen
DWater and Carbon (IV) oxide
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Question 625
jamb2016
In an electrochemical cell, polarization is caused by
AOxygen
BHydrogen
CTetraoxosulphate(IV) acid
DChlorine
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Question 626
waec2015
Consider the following equilibrium system:
2SO2(g) + O2(g) \(\rightleftharpoons\) 2SO3(g)
The addition of more O2(g) to the system will shift the equilibrium position to the
ARight leading to the production of more SO3(g)
BRight leading to the production of more SO2(g)
CLeft leading to the production of more SO2(g)
DLeft leading to the production of more SO3(g)
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Question 627
waec2015
The correct balanced equation for the reaction between aluminium metal and hot concentrated tetraoxosulphate(VI)acid is ?
