PPSC Assistant Director Population Welfare(BS-17)-2020, Everyday Science MCQs, PPSC Solved Past Papers MCQsThe gas used in manufacturing of Banaspati ghee is?A. Helium B. Oxygen C. Nitrogen D. Hydrogen Choose the correct words from the options to complete the sentence correctly: Khalid is ____ taller than Naveed?Choose the correct Antonym of “Liberty”?