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Chemistry NECO SSCE 2009 Acids, Bases, and Salts
Which of the following salt solutions will have a pH greater than 7?
A
NaCl
B
NaHSO4
C
Na2CO4
D
Na2SO4
E
MgCl2
medium Difficulty
Chemistry NECO SSCE 2009 Kinetics, Energetics and Equilibrium
The relationship between equilibrium constant and free energy change is represented as
A
δ G ° =-nFE °
B
δG °-RT ln K
C
δ G °= + RT In k
D
δG ° = δH – T S
E
H=TδS
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
Which of the following is a solid at room temperature?
A
Argon
B
Bromine
C
Chlorine
D
Fluorine
E
Iodine
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
The green house effect is a climatic condition associated with the presence of excess
A
carbon (II) oxide
B
carbon (IV) oxide
C
hydrogen sulphide
D
nitrogen (II) oxide
E
oxygen
medium Difficulty
Chemistry NECO SSCE 2009 Acids, Bases, and Salts
The following are ores of metals EXCEPT
A
bauxite
B
dolomite
C
graphite
D
haematite
E
magnetite
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
Ptotal = P1 + P2 + P3 +…………. Pn, is an expression of law
A
Boyle’s
B
Charles’
C
Dalton’s
D
Graham’s
E
Gay Lussac’s
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
All the following belong to the same family EXCEPT
A
glycerol
B
nylon
C
perspex polyethene
D
polyethene
E
polystyrene
medium Difficulty
Chemistry NECO SSCE 2009 Atomic Structure and Periodic Table
How many atoms of chlorine are required to saturate the double bonds of a compound containing a triene?
A
2
B
3
C
4
D
5
E
6
medium Difficulty
Chemistry NECO SSCE 2009 Acids, Bases, and Salts
Which of the following gases is absorbed from the air due to photosynthesis?
A
Carbon (II) oxide
B
Carbon (IV) oxide
C
Nitrogen
D
Noble gases
E
Oxygen
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
X = - log10 H+] What does X stand for in the expression above?
A
Degree of acidity
B
Enthalpy change
C
Equilibrium constant
D
Ionic product of water
E
Solubility product
medium Difficulty
Chemistry NECO SSCE 2009 Matter & Separation Techniques
During the extraction of iron in the blast furnance, slag is produced using
A
carbon
B
crylite
C
limestone
D
oxygen
E
sulphur
medium Difficulty
Chemistry NECO SSCE 2009 Atomic Structure and Periodic Table
Brain tumors can be located by using an isotope of
A
carbon - 14
B
iodine 131
C
technetium 99
D
uranium235
E
uranium 238
medium Difficulty
Chemistry NECO SSCE 2009 Stoichiometry & Mole Concept
What volume of carbon (IV) oxide in dm 3 is produced at s.t.p. when 2.50g of CaCO3 reacts with excess acid according to the following equation? CaCO3(s) + 2HCI(aq) → CaCl2(aq) + H2O(1) + CO2(g) [CaCO2 100; molar volume of a gas at s.t.p. = 22.4dm 3]
A
0.28
B
0.56
C
2.24
D
5.6
E
11.2
medium Difficulty
Chemistry NECO SSCE 2009 Electrochemistry and Redox
The following equations represent redox reactions EXCEPT
A
Ba2+(aq) + SO2-4 (aq) → BaSO4(s)
B
Cl2(g) + 2Br- (aq) → 2CI - (aq) + Br2(g)
C
Fe2+(aq) + ½ C I2(aq) → Fe3+ (aq) + CI-(aq)
D
2Fe3+(aq) + Sn2+(aq) → 2Fe2+(aq) Sn4+ (aq)
E
Zn(s) + CU2+(aq) → Zn2+(aq) + CU(s)
medium Difficulty
Chemistry UTME / JAMB 2009 Atomic Structure and Periodic Table
If the relative atomic mass of an element is not a whole number, it can be deduced that the element is?
A
Naturally radioactive
B
abundant in nature
C
a transition metal
D
an isotopic mixture
medium Difficulty
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