Which of the Following Reactions Is a Redox Reaction? (A)

question 86

Multiple Choice

Which of the following reactions is a redox reaction? (a) K₂CrO₄ + BaCl₂ → BaCrO₄ + 2KCl
(b) Pb₂²⁺ + 2Br^- → PbBr
(c) Cu + S → CuS

• A)(a)only
• B)(b)only
• C)(c)only
• D)(a)and (c)
• E)(b)and (c)

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Definitions:

Physiological Basis

The underlying physical and biological mechanisms that enable bodily functions and behaviors.

Voluntary Reactions

Responses or actions that are consciously controlled and decided upon by an individual, as opposed to automatic or reflexive responses.

Facial Muscles

Groups of skeletal muscles that control expressions by moving the skin of the face.

Heart Rate

The number of heartbeats per unit of time, typically per minute, which can vary with fitness level, activity, and emotional state.