Which of These Is/are Oxidation-Reduction Reaction(s)

question 29

Multiple Choice

Which of these is/are oxidation-reduction reaction(s) ?
I. PCl₃ + 3H₂O → 3HCl + H₃PO₃
II. Fe₂O₃ + 3CO → 2Fe + 3CO₂
III. CaCO₃ + HClO₃ → Ca(ClO₃) ₂ + CO₂ + H₂O

• A) I only
• B) II only
• C) I and II
• D) I and III
• E) I, II, and III

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Definitions:

Assembly Time

The total time required to assemble a product or complete a manufacturing process.

Normally Distributed

A term used to describe data that follows a normal distribution, characterized by its bell-shaped curve.

Standard Deviation

An approach to measure the diversity or scattering of figures in a dataset.

Mean

The average of a set of numbers, obtained by dividing the sum of the numbers by the count of numbers.