If iron atoms are equal but oxygen atoms are not equal in an equation, what is the equation?
Answer and explanation
Correct answer: Unbalanced
A chemical equation is balanced only when the number of atoms of every element is equal on the reactant and product sides. Equality for iron alone is insufficient. If oxygen atoms differ, the equation does not represent conservation of mass correctly and must be balanced by changing suitable coefficients, never subscripts. Precipitation and exothermicity describe other properties, not atom-count balance. Therefore option B is correct.
Frequently asked questions
What is the correct answer to this question?
Unbalanced
Why is this the correct answer?
A chemical equation is balanced only when the number of atoms of every element is equal on the reactant and product sides. Equality for iron alone is insufficient. If oxygen atoms differ, the equation does not represent conservation of mass correctly and must be balanced by changing suitable coefficients, never subscripts. Precipitation and exothermicity describe other properties, not atom-count balance. Therefore option B is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
