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Online Tests
Chemistry 10th Class English Medium Online Test 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
Ozone is beneficial for us as it
Choose an answer
Absorb infrared radiation.
Absorb Ultraviolet radiations.
Absorb Chlorofluorocarbons
Absorb Air pollulant
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Question # 3
Marsh gas is mostly consisted of.
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Butane
Propane
Ethane
Methane
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Question # 4
Wood contain the amount of carbon.
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70%
80%
60%
40%
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Question # 5
The ability of carbon atoms to form chains or ring called.
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Hydrogenation
Chlorination
Cantenation
Halogenation
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Question # 6
Extraction of metals from its ores is called.
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Metallurgy
Mining
Griding
All
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Question # 7
When acid reacts with sulphites and Bi sulphates which gas is evolved?
Choose an answer
H2
CO
2
SO
2
NH
3
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Question # 8
When a system is at equilibrium states?
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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 # 9
Which gas is also known as life gas for plants.
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CO
CO
2
O
2
NO
2
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Question # 10
The process by which water rises up from the roots of plants to leaves is called.
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Photosynthesis
Respiration
Surface tension
Capillary action
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Question # 11
Which is the natural sugar found in starchy food.
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Pentose
Dextrose
Hexose
All of them
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Question # 12
Fertilizers are used to make up the deficiency of;
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oxygen and carbon
iron and magnesium
nitrogen and phosphorus
hydrogen and calcium
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Question # 13
Hookworm is a parasite that infects the:
Choose an answer
large intestine
small intestine
stomach
liver
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