alleryWhat change in oxidation state signifies that chemical reduction occurred?
ARise in atomic weight
BDrop in oxidation number
CLoss of core protons
DGain of nuclear charge
Answer & Solution
Correct answer: B. Drop in oxidation number
Reduction corresponds to a decrease in the oxidation state of an element as it gains electrons.
Keep practising Chemical Changes and Reactions
Browse all Chemical Changes and Reactions questions for ICSE Class 9, or explore more Chemistry topics.
Related questions
Match each observable reaction indicator with the chemical phenomenon:Match each oxidation-reduction term with its electronic definition:Match each catalyst type with its operational effect on reactions:Match each reaction classification with its hallmark characteristic:A catalyst that exists in a different physical phase from reactants is:Chemical equilibrium in a reversible reaction is reached when:Dissolving ammonium nitrate salt in water is a classic example of an:The term endothermic was coined by which nineteenth-century chemist?