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Which observation best demonstrates that reduction has occurred in a chemical reaction?
Oxygen is removed from a metal oxide during heating.
Hydrogen gas is evolved after metal reacts with acid.
Oxygen combines with a metal to form its oxide layer.
Carbon dioxide is released after heating a carbonate salt.
Oxygen is removed from a metal oxide during heating.
Practice and solve "Which observation best demonstrates that reduction has occurred in a chemical reaction?..." for General Science - Previous Year Paper 2026. The correct answer is Option A: Oxygen is removed from a metal oxide during heating.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "Which observation best demonstrates that reduction has occurred in a chemical reaction?..." for General Science - Previous Year Paper 2026. The correct answer is Option A: Oxygen is removed from a metal oxide during heating.. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.