# Chemistry 2014 | Study Mode

Question 1
A
the properties of a compound are those of its individual constituents while those of a mixture differ from its constituents
B
a mixture is always homogeneous while a compound is not
C
the constituent of a compound are chemically bound together while those of a mixture are not
D
a mixture can be represented by a chemical formula while a compound cannot
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

Question 2
A
66%
B
25%
C
40%
D
50%
##### Explanation
molar mass of SO 2=64 :.%S=32/64 x 100 = 50%

Question 3
A
128
B
8
C
16
D
64
##### Explanation
$$\frac{RY}{RX}$$ = $$\frac{\sqrt{My}}{\sqrt{My}}$$ 1/2 = $$\frac{\sqrt{32}}{\sqrt{y}}$$ $$\frac{32}{y}$$ = 1/4
Y = $$\frac{32x4}{1}$$ = 128

Question 4
A
342.53 mmHg
B
1430.54 mmHg
C
467.11 mmHg
D
400.00 mmHg
##### Explanation
$$\frac{p 1V 1}T 1$$ = $$\frac{P 2V 2}{T 2}$$ $$\frac{700x200}{298}$$ = $$\frac{P2X 350}{348}$$ P2 = $$\frac{700x200x348}{298x350}$$ = 467.11mmHg

Question 5
A
lt has a completely filled p-orbital
B
lt has 5 electrons in its outermost shell.
C
lt belongs to group ll on the periodic table
D
lt is a halogen
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

Question 6
A
metallic
B
covalent
C
co-ordinate
D
ionic
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

Question 7
A
27, 33 and 33
B
33, 27 and 27
C
27, 33, and 27
D
60, 33 and 60
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

Question 8
A
$$\gamma$$- rays
B
$$\alpha$$- particles
C
X-rays
D
$$\beta$$ - particles
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

Question 9
A
14
B
29
C
28.11
D
28
##### Explanation
($$\frac{92}{100}$$ x 28) + ($$\frac{5}{100}$$ x 29) + ($$\frac{3}{100}$$ x 230) = 28.11

Question 10
A
water vapour
B
oxgyen
C
rare gases
D
carbon (IV) oxide
##### Explanation

Explanation not provided, please join discuss, your contributions are welcomed

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