Chemistry Past Questions

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4,306 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10
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Past Questions

4,306 questions
Question 1 of 20 4,306 total questions
Question 871
waec 2010

The bonds in crystaline ammonium chloride are?

Acovalent and dative
Bionic and covalent
Cionic covalent and dative
Dionic covalent and hydrogen bond
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Question 872
waec 2010
Which of the following molecules has a triple bond in its structure?
ACH4
BNH3
CN2
DO 2
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Question 873
waec 2010
Which of the following molecules has a linear shape?
ACH4
BCO 2
CH2S
DNH 3
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Question 874
waec 2010
A solid substance with high melting and boiling points is likely to be a/an
Acovalent compound
Bdative covalent compound
Celectrovalent compound
Dnon-metal
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Question 875
waec 2010
Which of the following species correctly represented an ion of M with 13 protons and 10 electrons?
A10M 3+
B10M 3-
C13M 3+
D13M 3-
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Question 876
waec 2010
If X is a group lll element, its oxide would be represented as
AX3O2
BX3O
CX2O3
DXO3
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Question 877
waec 2010
Which of the following statements about chlorine and iodine at room temperature is correct?
AChlorine is gas and iodine is solid
BChlorine is liquid and iodine is gas
CChlorine and iodine are gases
DChlorine is solid and iodine is liquid
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Question 878
waec 2010
Which of the following elements is a d-block element?
ACalcium
Blron
CLithium
DSilicon
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Question 879
waec 2010
The energy change which accompanies the addition of an electron to a gaseous atom is
Aatomization
Belectron affinity
Celectronegativity
Dionization
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Question 880
waec 2010
Which of the following equations represents beta decay?
A\(\frac{14}{7}\)N + \(\frac{4}{2}\)He → \(\frac{8}{17}\)O + \(\frac{1}{1}\)H
B\(\frac{8238}{92}\)U → \(\frac{234}{90}\)Th + \(\frac{4}{2}\)He
C\(\frac{8238}{92}\)U → \(\frac{239}{93}\)Np + \(\frac{0}{-1}\)e
D\(\frac{13}{7}\)N + \(\frac{4}{2}\)He → \(\frac{16}{8}\)O + \(\frac{1}{1}\)H
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Question 881
jamb 2010

In the diagram above, the gas produced is?

ANO
BNO2
CN2O
DN2O4
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Question 882
jamb 2010

In the diagram above, the purpose of the asbestos to?

Aabsorb impurities
Bcatalyze the reaction
Csolidify the gas
Ddry the gas
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Question 883
jamb 2010

The compound that is used as an anesthetic is?

ACCl4
BCH Cl3
CCH2Cl2
DCH3Cl
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Question 884
jamb 2010

Two hydrocarbons X and Y were treated with bromine water. X decolorised the solution and Y did not not. Which class of compound does Y belong?

ABenzene
BAlkynes
CAlkenes
DAlkanes
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Question 885
jamb 2010

The haloalkanes used in dry-cleaning industries are?

Atrichloromethane and tetrachloromethane
Bchloroethene and dichloroethene
Ctrichloroethene and tetrachloroethene
Dchloroethane and dichloroethene
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Question 886
jamb 2010

One of the major uses of alkane is?

Aas domestic and industrial fuel
Bin the hydrogenation of oils
Cin the textile industries
Din the production of plastics
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Question 887
jamb 2010

The correct order of increasing boiling points of the following compounds C3H7OH, C7H16 and C4H10 is?

AC3H7OH → C4H10 → C7H10
BC4H10 → C7H16 → C3H7OH
CC7H16 → C3H7OH → C4H10
DC4H10 → C3H7OH → C7H16
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Question 888
jamb 2010

The final products of the reaction between methane and chlorine in the presence of ultraviolet light are hydrogen chloride and?

Atricloromethane
Bdichloromethane
Ctetrachloromethane
Dchloromethane
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Question 889
jamb 2010

Which of the following is used to hasten the ripening of fruit?

AEthene
BEthanol
CEthyne
DEthane
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Question 890
jamb 2010

Benzene reacts with hydrogen in the presence of nickel catalyst at 180ºC to give?

Axylene
Btoluene
Ccyclopentane
Dcyclohexane
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