Chemistry 2014 | Study Mode

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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

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

Correct option: D
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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

Correct option: A
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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

Correct option: C
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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

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Correct option: D
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Question 6
A
metallic
B
covalent
C
co-ordinate
D
ionic
Explanation

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Correct option: D
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Question 7
A
27, 33 and 33
B
33, 27 and 27
C
27, 33, and 27
D
60, 33 and 60
Explanation

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Correct option: C
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Question 8
A
\(\gamma\)- rays
B
\(\alpha\)- particles
C
X-rays
D
\(\beta\) - particles
Explanation

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Correct option: C
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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

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

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Correct option: C

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