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CBSE - Class 10 Science Chemical Reactions and Equations Worksheet
Which of the following represents a combination reaction?
CaCO3 → CaO + CO2
b.2Mg+ O2 → 2MgO
c.Fe + CuSO4 → FeSO4 + Cu
d.AgNO? + NaCl → AgCl + NaNO?
A chemical change may involve
change in colour only
b.change in temperature only
c.evolution of gas only
d.any or all of above
What is meant by arrow sign in a equation of chemical reaction?
State of the matter
b.Type of reaction
c.Direction of reaction
d.Sign of equation
What is called the components in LHS of a chemical reaction equation
Products
b.Starter
c.Beginner
d.Reactants
What is called the components in RHS of a equation of chemical reaction
Ending
b.Reactants
c.Products
d.Result
' ↑ ' sign means in a chemical equation
Solid
b.Gas
c.Liquid
d.Level
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