PPSC Solved Past Papers MCQs, General Knowledge MCQs, PPSC Inspector Anti Corruption Establishment Past Papers 2020Among the following who has won the Nobel Prize twice?A. Sir C V Raman B. Dr. Muhammad Younas Khan C. Dr. Linus Carl Pauling D. Nelson Mandela Complete the proverb: “Keep your friends close and your enemies ــــ” ?The thinning of Ozone layer is resulting due to chlorofluorocarbons, which are used in ?
