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An increase in temperature causes an increase in pressure of a gas in a fixed volume due to an increase in the?
Anumber of molecules of the gas
Bdensity of the gas molecules
Cnumber of collisions between the gas molecules
Dnumber of collisions between the gas molecules and the walls of the container
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Question 922
jamb1992
If 100 cm3 of oxygen pass through a porous plug in 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is?
(O = 16, H = 1)
A10.0 s
B12.5 s
C17.7 s
D32.0 s
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Question 923
jamb1992
Which of the following is a measure of the average kinetic energy of the molecules of a substance?
AVolume
BMass
Cpressure from age grades
DTemperature
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Question 924
jamb1992
A given mass of gas occupies 2 dm3 at 300k. At what temperature will its volume be doubled keeping the pressure constant?
A400 k
B480 k
C550 k
D600 k
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Question 925
jamb1992
wH2SO4 + xAI(OH)3 → yH2O + = zAI2(SO4)3. The respective values of w.x.y and z in the equation above are?
A2,2,5 and 1
B3,2,5 and 2
C3,2,6 and 1
D2,2,6 and 2
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Question 926
jamb1992
How many moles of (H+) are there in 1 dm3 of 0.5 M solution of H2SO4?
A2.0 moles
B1.0 moles
C0.5 mole
D0.25 mole
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Question 927
jamb1992
There is a large temperature interval between the melting point and the boiling point of a metal because?
Ametals have very high melting points
Bmetals conduct heat very repaidly
Cmelting does not break the metalic bond but boiling does
Dthe crystal lattice of metals is easily broken
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Question 928
jamb1991
The appropriate test paper to use in the above experiment is moist
Alitmus psper
Bpotassium heptaoxodichromate (IV) paper
Clead (ll) trioxonitrate (V) paper
Duniversal indicator paper
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Question 929
jamb1991
The data in the table above shows the rate of reaction of nitrogen (ll) oxide with chlorine at 25oC It can be concluded that doubling the initial concentration of NO increase the rate of reaction by a factor of
Atwo
Bthree
Cfour
Dfive
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Question 930
jamb1991
50 cm3 of sulphur (lV) oxide, 800 cm3 of carbon (IV) oxide will respectively saturate 1.0cm3 of water at 15oC. Which of the following is suitable for demonstrating the fountain experiment?
ASulphur (IV) oxide and hydrogen chloride.
BCarbon (IV) oxide and ammonia
CAmmonia and hydrogen chloride
DCarbon (IV) oxide and Sulphur (IV) oxide
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Question 931
jamb1991
The electrons of two atoms Y and Z are arranged in shells as shown above. The bond formed between the atoms of Y and Z is
Aionic
Bcovalent
Cdative
Dmetallic
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Question 932
jamb1991
Which of these is an acid salt?
AK2SO4-.AI2(SO4)3.24H2O
BCuCO3.Cu(OH)2
CNaHS
DCaOCI2-
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Question 933
jamb1991
Which of the following are the products of the reaction between CH3COOH and CI2 in sunlight?
ACICH2COOH + HCI
BCH3COCI + HOCI
CCH3COOCI + HCI
DCH3COCI + HO2
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Question 934
jamb1991
Which of the following statements is TRUE of the complete hydrolysis of a glycerine by sodium hygroxide?
A3 moles ofNaOH are required for each mole of glyceride
B3 moles of glycerol are produced
COnly one mole of soap is formed
Dconcentrated H2SO4 is essential for the completion of the reaction
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Question 935
jamb1991
Is known as?
A1-chloro-2-methylbutane
B1-chloro-2-methylpropane
C2-chloromethylpropane
D1-chloro-2, 2-dimethylethane
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Question 936
jamb1991
A certain liquid has a high boiling point. It is viscous, non-toxic, miscible with water being very hygroscopic. This liquid is most likely to be?
ACH3CH2CH2HO
BCH3CHOHCH3
CCH3CH2CHOHCH3
DCH2OHCHOHCH2OH
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Question 937
jamb1991
One advantages of detergents over soap is that detergents?
Aare easier to maufacture
Bfoam more than soap
Cform soluble salts with hard water
Dare able to deter germs more than soap
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Question 938
jamb1991
Ethene when passed into concentrated H2SO4 is rapidly absorbed. The product is diluted with water and then warmed to produce?
Aethanol
Bdiethyl ether
Cethanal
Ddiethyl sulphate
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Question 939
jamb1991
How many grams of bromine will be required to completely react with 10 g of propyne?
(C = 12, H = 1, Br = 80)
A20 g
B40 g
C60 g
D80 g
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Question 940
jamb1991
Which of the following compounds can exist as geometric isomers?
