Which of the following is not a pure substance?

The symbol of carbonate ion is -

Which of the following is not a chemical change?

The products of Neutralisation reaction are-

Fe (s) + CuSO₄ -> FeSO₄ + Cu. This is _____ reaction.

Iron get rusted in coming in contact with-

The chemical formula of sodium is.

Equation having same no. of atoms of each element on both the sides is called-

Reactants are found on the _______________ side of the arrow in a chemical equation.

what is the symbol of gold ?

what is H2O