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help me with Chemistry Redox reaction MCQ?
please solve these two MCQs for me..
1. Which substance cannot reduce iron (III) oxide to iron?
a) Carbon dioxide
b) Carbon monoxide
c) Coke (carbon)
d) Hydrogen
2. Why does the colour of potassium iodide change to brown when chlorine is bubbled throught it?
a) A compound is formed between chlorine and potassiuum iodide
b) Chlorine oxidises iodide ion to iodine
c) Iodine reacts with starch to give a blue color
d) Potassium chloride is formed which is coloured.
1 Answer
- 1 decade agoFavorite Answer
1. b
2. b