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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
The coal in which the percentage of carbon is 60%
Choose an answer
Peat
Lignite
Bituminous
Anthracit
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Question # 3
What gas is the major constituent of troposphere?
Choose an answer
Nitrogen
Oxygen
Hydrogen
Both a and b
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Question # 4
The percentage of sun light absorbed by atmospheric gases is.
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2%
10%
18%
25%
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Question # 5
Dehydrohalogenation of vicinal-dihalides take place in the presence of.
Choose an answer
NaOH
KOH
NaCl
None of these
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Question # 6
Number of vitamins in vitamin B complex is.
Choose an answer
10
8
6
12
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Question # 7
Essential components of every living all are.
Choose an answer
Nucleic acids
Enzymes
Lipids
Cell wall
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Question # 8
Gypsum in water is.
Choose an answer
Sparingly soluble
Insoluble
Highly soluble
None of them
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Question # 9
Carbon monoxide is harmful to us because.
Choose an answer
It paralyses the lungs.
It damages lungs tissues.
It reduces oxygen carrying ability of haemoglobin
It makes the blood coagulate.
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Question # 10
A strange bitter smell noticed near photocopiers is of:
Choose an answer
SO2
H2S
O2
O3
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Question # 11
Equilibrium constant has no unit when number of moles of reactants and products are:
Choose an answer
same
Different
Both a and b
None of these
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Question # 12
Which one of the following is Lewis base?
Choose an answer
NH
3
BF
3
H
+
AlCl
3
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Question # 13
Night blindness is because of deficiency of:
Choose an answer
Vitamin A
Protein
Vitamin C
Vitamin D
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