General Knowledge Solved MCQs about Colombo Plan and OPEC (Organization of Petroleum Exporting Countries) Here are some Solved MCQs on Organization of Petroleum Exporting Countries (OPEC) and list of current Member Countries of OPEC. This post also contains solved MCQs about Colombo Plan. You practice these Multiple choice questions about OPEC or Solved MCQs about OPEC for your job test. …