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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Temporary hardness is because of.
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Question # 2
About 99% of atmospheric mass lies in.
Choose an answer
35 km
30 km
15 km
16 km
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Question # 3
Arrhenius put forward acid base concept in.
Choose an answer
1878
1786
1787
1790
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Question # 4
Permanent hardness can be removed by using .
Choose an answer
Soda lime
Sodium Zeolite
Quick lime
Lime water
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Question # 5
Which is the main component of natrual gas.
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Methane
Ethane
Propane
Charcoal
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Question # 6
Carbohydrates are synthesized by plants through photosynthesis process which requires the following except.
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CO
2
and water.
Sunlight
O
2
Chlorophyll
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Question # 7
Acid means
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Sour
Bitter
Sweet
Salty
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Question # 8
The % age of carbon in peat is :
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60%
70%
80%
90%
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Question # 9
If a liquid has a pH of 7 then it must.
Choose an answer
Be a colourless and odourless liquid
Freeze at 0
o
C and boil at 100
o
C
Be natural
Be a solution containing water
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Question # 10
Monosaccharides consist of:
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2 to 6 carbon atoms
3 to 9 carbon atoms
4 to 10 carbon atoms
10 to 15 carbon atoms
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Question # 11
Photosynthesis process produces.
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Starch
Cellulose
Sucrose
Glucose
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Question # 12
Temporary hardness in water can he removed by.
Choose an answer
Boiling Method
Using washing soda
Using sodium zeolite
All of them
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Question # 13
Alkynes are also called.
Choose an answer
Olefine
Ethene
Paraffins
Acetylenes
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