Rusting of iron takes place faster with the contact of
Water
Air
Common salt
Oil
Sugar when heated liberates _________________ and water.
Carbon
Magnesium
Calcium
Protein
Substance taking part in a reaction are called
Product
Reactant
Pollutant
Iron sulphate is ________________ in color.
Bluish green
Green
Yellowish brown
White
Chemical changes are also called ______________.
Temporary reactions
Physical reactions
Chemical Reactions
None of these
What is the color of copper oxide?
Black
Violet
Yellow
Reactants are written on ______________ side of chemical equation.
Right
Left
Both
________________ are written on the left side of the chemical equation.
Products
Reactants
Pollutions
Acids