Chemistry Past Paper Questions

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Q 921:Which one of the following ion does not cause hardness of water:
A
Ca2+
B
Mg2+
C
SO42-
D
Na+
Gujranwala, 2017
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Q 922:Which disease causes bone and tooth damage?
A
Fluorosis
B
Hepatitis
C
Cholera
D
Jaundice
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Q 923:Which of the following is disaccharide?
A
Glucose
B
Fructose
C
Sucrose
D
Starch
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Q 924:Which one of the following halogen has highest electronegativity?
A
F
B
Cl
C
Br
D
I
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Q 925:The oxidation number of chlorine on KClO3 is:
A
+7
B
+5
C
-3
D
+1
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Q 926:The symbol of Avogadro's number is:
A
A
B
Z
C
NA
D
AN
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Q 927:The value of absolute zero is
A
-273.15°C
B
273.15 °C
C
0 °C
D
100 °C
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Q 928:Transfer of electrons between atoms result in:
A
Metallic Bonding
B
Ionic bonding
C
cavalent bonding
D
Coordinate covalent bonding
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Q 929:Tyndall effect is shown by:
A
Sugar Solution
B
Chalk solution
C
jelly
D
Paints
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Q 930:Vapour pressure of water at 100 °C is:
A
140 mmHg
B
360 mmHg
C
580 mmHg
D
760 mmHg
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Total MCQs: 1548Page 93 of 155
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