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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X.
Choose an answer
C
3
H
8
C
6
H
12
C
4
H
10
C
7
H
16
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Question # 2
Which gas is responsible in warming the atmosphere?
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Nitrogen
Hydrogen
Helium
Fluorine
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Question # 3
The % age of carbon in coke is
Choose an answer
60
70
90
98
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Question # 4
Which of following is not conjugate base.
Choose an answer
S
-2
F
-1
Na
+
SO
4
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Question # 5
Alkenes are produced in large amounts by cracking of.
Choose an answer
Natural gas
Petroleum
Benzene
xylol
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Question # 6
Alkanes give reaction only
Choose an answer
Addition
Decomposition
Substitution
Displacement
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Question # 7
Which element protects teeth from decay?
Choose an answer
Potassium
Fluorine
Sodium
Calcium
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Question # 8
Our planet earth consists of ____________ natural Spheres.
Choose an answer
1
4
6
8
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Question # 9
Chalco-Pyrite is an ore of:
Choose an answer
Copper
Silver
Iron
Aluminium
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Question # 10
The nature of enzyme is.
Choose an answer
Protein
Vitamin
Fats
Carbohydrate
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Question # 11
Temporary hardness is because of.
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Question # 12
In the preparation of insoluble salts, which one of the facts is incorrect?
Choose an answer
Two soluble salts are mixed
Two in soluble salts are mixed .
One of the salt produced is insoluble
Both of the salts produced are insoluble
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Question # 13
The colour of litmus in a strong basic solution become.
Choose an answer
Yellow
Blue
Red
Colourless
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