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Use the graph above to answer this question. The mass of a substance, M, liberated at an electrode during electrolysis is proportional to the quantity of electricity, Q passing through the electrolyte. This is represented graphically by.
AA
BB
CC
DD
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Question 22
jamb1988
Which of the gas laws does the above graph illustrate?
ABoyle
BCharles
CGraham
DGay-Lussac
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Question 23
jamb1988
In the experiment above, ammonium chloride crystals deposit on the walls of the tube is as a result of
Aevaporation
Brecrystallization
Csublimation
Dfractional precipitation
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Question 24
jamb1988
An eruption pollution an environment with gas suspected to be H2S, a poisonous gas. A residue team should spray the environment with?
Awater
Bmoist SO2
Cacidified KMnO4 and water
Dwater, acidified KMnO4 and oxygen
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Question 25
jamb1988
The molar ratio of oxygen to nitrogen in dissolved air is 2:1 whereas the ratio is 4:1 in atmospheric air because?
Anitrogen is less soluble than oxygen
Boxygen is heavier than nitrogen
Cnitrogen has a higher partial pressure in air
Dgases are hydrated in water
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Question 26
jamb1988
The energy changes accompanying the addition of an electron to a gaseous atom is called?
Afirst ionization energy
Bsecond ionization energy
Celectron affinity
Delectronegativity
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Question 27
jamb1988
What are the possible oxidation numbers of an element if its atomic number is 17?
A-1 and 7
B-1 and 6
C-3 and 5
D-2 and 6
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Question 28
jamb1988
Which of the following physical properties decreases across the Periodic Table?
AIonization potenial
BElectron affinity
CElectronegativity
DAtomic radius
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Question 29
jamb1988
A metallic ion X2+ with an inert gas structure contains 18 electrons. How many protons are there in this ion?
A20
B18
C16
D2
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Question 30
jamb1988
The forces holding naphthalene crystals together can be overcome when naphthalene is heated to a temperature of 354K resulting in the crystal to melting. These forces are known as?
Acoulombic
Bionic
Ccovalent
DVan der waals
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Question 31
jamb1988
An increase in temperature causes an increase in the pressure of a gas because there is an increase in the?
Aaverage velocity of the molecules
Bnumber of collisions between the molecules
Cdensity of the molecules
Dfree mean path between each molecules and other
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Question 32
jamb1988
One mole of propane is mixed with five moles of oxygen. The mixture is ignited and the propane burns completely. What is the volume of the products at s.t.p?
(G.M.V = 22.4 dm3 mol-1)
A112.0 dm3
B67.2 dm3
C56.0 dm3
D44.8 dm3
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Question 33
jamb1988
2.25g of a sample of an oxide of copper on reduction gave 2.0g of copper. 2.50g of another oxide of copper on reduction also gave 2.0g of copper. These results are in accordance with the law of?
Aconstant composition
Bconservation of matter
Cmultiple proportions
Ddefinite proportions
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Question 34
jamb1988
The formula of a compound formed in a reaction between a trivalent metal M and a tetravalent non-metal X is~?
AMX
BM3X4
CM4X3
DM3X2
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Question 35
jamb1988
What process would coal undergo to give coal gas, coal tar, ammoniacal liquor and coke?
ASteam distillation
BDestructive distillation
CLiquefaction
DHydrolysis
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Question 36
jamb1988
Detergents have the general formula?
AR(CH2)nOH
BRSO3-Na+
CRSO-2Na+
DRSO2H
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Question 37
jamb1988
Which of the following compounds has the highest boiling point?
ACH3CH2CH2CH2HO
BCH3CH2CH2CHO
CCH3CH2CH2CH3
DCH3CH2OCH2CH3
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Question 38
jamb1988
The four classes of hydrocarbons are?
Aethane, ethene, ethyne and benzene
Balkanes, alkenes, alkynes and aromatics
Calkanes, alkenes, alkynes and benzene
Dmethane, ethane , propane and butane
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Question 39
jamb1988
Alkanoates are formed by the reaction of alkanoic acid with?
