O Level

Chemistry MCQs

O Level Chemistry MCQs - Subtopic

Redox Reactions MCQ with Answers

Redox Reactions Multiple Choice Questions (MCQ) to practice redox reactions quiz answers PDF, O level chemistry worksheets for online degrees. Solve redox reactions Multiple Choice Questions and Answers (MCQs), "Redox Reactions" quiz questions and answers for accelerated bachelors degree online. Learn oxidation and reduction, redox reactions test prep for SAT subject tests.

"If acidified Potassium Dichromate(VI) (K2Cr2O7) acts as oxidizing agent, color changes from" Multiple Choice Questions (MCQ) on redox reactions with choices orange to red, orange to green, yellow to green, and yellow to red for accelerated bachelors degree online. Solve redox reactions quiz questions for merit scholarship test and certificate programs for colleges that offer online degrees.

MCQs on Redox Reactions

1.

If acidified Potassium Dichromate(VI) (K2Cr2O7) acts as oxidizing agent, color changes from

orange to red
orange to green
yellow to green
yellow to red

2.

In an acidified solution of Potassium Dichromate(VI) (K2Cr2O7), Dichromate ion (Cr2O7-2) becomes reduced to

Chromate (V) ions
Chromium (III) ions
Chromium (II) ions
Chromium (VI) ions

3.

In a reaction between CuSO4(s) and Zn(s),

Zinc experiences an increase in the oxidation state
Zinc experiences a decrease in the oxidation state
Zinc undergoes reduction
none of above

4.

Old paintings became decolorized due to

Lead Sulphide PbS
Lead Sulphate PbSO4
Lead Chloride PbCl2
Lead Oxide PbO

5.

In a reaction between CuSO4(s) and Zn(s),

copper gains electrons
copper is being reduced
copper experiences a decrease in oxidation state
all of above