Simple Chemical Reactions

Simple Chemical Reactions
When substance combines with oxygen while burning, the reaction is termed as
combustion
burning
evaporation
both a and b
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Simple Chemical Reactions
Chemical changes are
reversible
irreversible
interchangeable
non interchangeable
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Simple Chemical Reactions
Chemical change involves the formation of
products
new substances
salts
water
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Simple Chemical Reactions
Natural gas is made up of compound
carbon
methane
ethene
ethane
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Simple Chemical Reactions
The process of breaking down of any substance into smaller substances by heating, is called
decomposition
evaporation
thermal decomposition
melting
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Simple Chemical Reactions
The change which is not accompanied by formation of new substance is called a
physical change
chemical change
complex change
electrical change
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Simple Chemical Reactions
The conservation of mass is obtained when the total mass of reactants is equal to total mass of
products
molecules
protons
atoms
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Simple Chemical Reactions
Irreversible changes include
burning of paper
rusting of iron
corrosion of material
all of them
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Simple Chemical Reactions
At room temperature iron and sulphur
do no react
react
vigorously react
somehow react
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Simple Chemical Reactions
The process in which reactants react together to form a product, is called
chemical reaction
chemical change
chemical process
chemical procedure
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