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Online Tests
Science 7th Class English Medium Chapter 5 Online Test MCQs With Answers
Question # 1
Sajeet the one that is different from the otehrs.
Choose an answer
Solubility
Conductance
Oxidation
Coiling of a substance
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Question # 2
Formation of steam from water is example of.
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Chemical change
Physical Change
Both of these
None of these
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Question # 3
Freezing of a liquid is a
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Chemical change
Chemicla property
Physical change
None of these
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Question # 4
A physical change occurs when.
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Iron rusts
Solution of common salt is heated
A piece of wood burns
Sygar us geated strongly
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Question # 5
Product fo combustion is.
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C
O2
CO2
All of these
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Question # 6
Select all that happen during a chemicla change.
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A temporary chagne occurs.
Composition of the substanes is changed.
Propertis of the sbstances are changed.
New substances with different properties are formed.
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Question # 7
Silver+ hydrogen suolphide+Oxygen--------------- Silver sulphide + water The above reaction is known as.
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Combustion
Rusting
Tarmishing
Dehydration
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Question # 8
A gas produced on heating solid potassium chlorate is.
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Hydrogen
Carbon dioxide
Oxygen
Methane
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Question # 9
Original colur or Nichrome wire is.
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Silver grey
Red hot
White hot
None of these
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Question # 10
What are teh products when electric current is passed through water.
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Only steam
Hydrogen and steam
Hydrogen and oxygen
Oxygen and steam
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