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Online Tests
10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Concentration of the copper ore is carried out by:
Choose an answer
Calcinations
Roasting
Forth flotation
Distillation
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Question # 2
Smell of rancid butter is due to the presence of.
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Propanoic acid
Butanoic acid
Acitic acid
Citric acid
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Question # 3
Which helps in lowering of cholesterol level?
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Vitamin
Fiber
Carbohydratres
All of them
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Question # 4
The strong heating of coal in the absence of air called.
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Fractional Distilation
Destructive Distiation
Carbonization
Catenation
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Question # 5
Forest fires and burning of wood emit.
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CO
2
NO
2
SO
2
Cl
2
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Question # 6
Chemical formula of hypochlorous acid is.
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HCl
HOCl
H
2
CO
3
HF
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Question # 7
Grease stains from clothes are removed by sing.
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Ammonium nitrate
Aluminium hydroxide
Ammonium hydroxide
Aluminum chloride
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Question # 8
Hydrogenation of vegetable oil to convert it into banaspatic ghee is carried out in the presence of catalyst:
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Ni-metal
Zn-metal
Na - Metal
Fe2O3
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Question # 9
Which one of the following properties of water is responsible for rising of water in plants?
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Specific heat capacity
Viscosity
Excellent solvent action
Capillary action
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Question # 10
The nature of enzyme is.
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Protein
Vitamin
Fats
Carbohydrate
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Question # 11
The percentage of ocean in world water is.
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50%
67%
97%
25%
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Question # 12
On which base atmosphere is divided into four regions?
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Change in pressure
Change in rediation
Change in temperature
Change in volume
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Question # 13
Ionic compounds are soluble in water due to:
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Hydrogen bonding
ion-dipole forces
Dipole-dipole forces
Dipole -induced dipole forces
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