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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Which gas is not present in atmosphere?
Choose an answer
Nitrogen
Oxygen
Helium
Carbon dioxide
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Question # 2
A group of gases that maintains temperature of atmosphere is.
Choose an answer
Carbon dioxide and water vapours
Nitrogen and carbon dioxide
Thermosphere
Troposphere
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Question # 3
Water of crystallization is responsible for.
Choose an answer
Melting points of crystals2
Boiling point of crystal
Shape of crystal
Transition points of crystals
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Question # 4
When a system is at equilibrium states?
Choose an answer
The concentration of reactants and products becomes equal
The opposing reactions
The rate of the reverse reaction becomes very low
The rates of the forward and reverse reactions becomes equal.
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Question # 5
The unit of molar concentration:
Choose an answer
mol. dm
-2
mol. dm
-1
mol. dm
mol. dm
-3
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Question # 6
Glucose and fructose are.
Choose an answer
Pentose
Triose
Hexoses
None of these
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Question # 7
Which gas is produce by the electrical lightening of air.
Choose an answer
NO
SO
2
SO
3
CO
2
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Question # 8
The chemical used in Clark's method is:
Choose an answer
CaO
slaked lime(Ca(OH)s)
washing soda
sodium zeolite
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Question # 9
Cause of global warming is :
Choose an answer
CO
2
gas
SO
2
gas
NO
2
gas
O
2
gas
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Question # 10
Which protect our muscles from cramping?
Choose an answer
Carbohydrats
Vitamins
Lipids
Proteins
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Question # 11
Which is not a reducing sugar?
Choose an answer
Glucose
Fructorse
Cellulose
All of them
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Question # 12
___________ is not mineral acid.
Choose an answer
HCl
CH
3
COOH
H
2
SO
4
HNO
3
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Question # 13
Composition of carbon in kerosene oil is.
Choose an answer
C
10
-C
12
C
12
-C
12
C
16
-C
18
C
30
-C
30
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