Question

State True or False.

Mass of reactants is always equal to the mass of the products. (Don't consider nuclear reaction)

• A. True
• B. False

Answer 1

The correct option is A True

The statement, "Mass of reactants is always equal to the mass of the products. (Don't consider nuclear reaction)" is true. This is the statement of the law of conservation of mass.
For example, consider the combustion of $C$.
$C+O_2\to C{O}_2$
The molar masses of $C$, $O_2$ and $C{O}_2$ are 12 g/mol, 16 g/mol and 44 g/mol respectively.
Total mass of reactants for combustion of 1 mole of $C$ is $12+32=44g$.
The total mass of products for combustion of 1 mole of $C$ is $44g$.

Hence the mass of the reactants is equal to the mass of the products.