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# Chemistry Post UTME Past Questions | OAU Post UTME

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### Question 1

When CuSO$$_4$$ solution is treated with ammonia solution drop by drop till it is added in excess, a precipitate is first formed which then dissolves in excess to give a deep blue solution. The deep blue solution is

### Options

A)
Cu(OH)$$_2$$
B)
(Cu(NH$$_3$$)$$_4$$)(OH)$$_2$$
C)
CuSO$$_4$$
D)
(Cu(NH$$_3$$)$$_2$$)SO$$_4$$

### Question 2

If 7.0 g of ethane at s.t.p occupy 5.6 dm$$^3$$, what volume will 7.5 g of ethane at the same condition occupy? (C = 12; H =1; GMV at s.t.p = 22.4 dm$$^3$$)

### Options

A)
6.0 dm$$^3$$
B)
5.6 dm$$^3$$
C)
5.2 dm$$^3$$
D)
9.4 dm$$^3$$

### Question 3

Which of the alcohol below is likely to be oxidiezed to give the acid below:

### Options

A)
Butan-1-ol
B)
2-methylpropan-2-ol
C)
2-Methylpropan-1-ol
D)
Propane-2-ol

### Question 4

The name of CH$$_3$$-OCOC$$_2$$H$$_5$$ is

### Options

A)
methoxyethane
B)
methyl propanoate
C)
ethyl ethanoate
D)
propyl methanoate

### Question 5

Which of these elements has the highest first ionization energy?

A)
Rb
B)
Li
C)
Na
D)
K

### Question 6

Which of the following is responsible for the conduction of electricity in a gas enclosed in a glass tube containing two electrodes at a reduced pressure and to which a high voltage is applied?

### Options

A)
Cations and anions
B)
Cations
C)
Electrons
D)
Cations and electrons

### Question 7

The type of reaction an alkanoic acid cannot undergo is

A)
Oxidation
B)
Combustion
C)
Decomposition
D)
Esterification

### Question 8

What is the pH of 2.5 $$\times$$ 10$$^{-2}$$ mol dm$$^{-3}$$ barium hydroxide solution?

A)
11.5
B)
11.6
C)
11.7
D)
11.8

### Question 9

The complete oxidation of proan -1-ol yields

### Options

A)
CH$$_3$$CH$$_2$$CHO
B)
CH$$_3$$COCH$$_3$$
C)
CH$$_3$$COOH$$_3$$
D)
CH$$_3$$CH$$_2$$COOH

### Question 10

Which of the following will change the equilibrium constant of the reaction CO$$_{(g)}$$ + H$$_2$$O $$\iff$$ CO$$_{2(g)}$$ + H$$_{2(g)}$$ ?

### Options

A)
Increase of temperature
B)
Increase of concentration of CO
C)
Removal of CO$$_2$$ from the mixture
D)
Decrease of pressure