Redox Reactions Multiple Choice Questions 1 PDF Download

Practice redox reactions multiple choice questions (MCQs), O level chemistry test 1 online for exams. Practice redox reactions MCQs questions and answers on redox reactions, redox reaction oxidation with answers. Free redox reactions quiz, online study guide has helping answer key with choices as orange to green, orange to red, yellow to green and yellow to red of multiple choice questions as if acidified potassium dichromate(vi) (k2cr2o7) acts as oxidizing agent, color changes from to test learning skills for viva exam preparation and job's interview questions. Study to learn redox reactions quiz questions to learn online MCQs for competitive exam preparation test.

MCQ on Redox Reactions Quiz PDF Download Test 1

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

  1. orange to red
  2. orange to green
  3. yellow to green
  4. yellow to red

C

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

  1. Chromate (V) ions
  2. Chromium (III) ions
  3. Chromium (II) ions
  4. Chromium (VI) ions

B

MCQ. Oxidation involves

  1. loss of hydrogen
  2. loss of oxygen
  3. gain in hydrogen
  4. gain in electrons

A

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

  1. Zinc experiences an increase in the oxidation state
  2. undergoes oxidation
  3. Zinc undergoes oxidation
  4. all of these

D

MCQ. Old paintings became discolourised due to

  1. Lead Sulphide PbS
  2. Lead Sulphate PbSO4
  3. Lead Chloride PbCl2
  4. Lead Oxide PbO

A