Medium PPSC 5 Years Past Papers Subject Wise (Solved with Details) PPSC 5 YEARS PAST PAPERS SUBJECT WISE (SOLVED WITH DETAILS) FPSC Question What is the chemical formula of Washing Soda? A NaHCO₃ B Na₂SO₃ C Na₂CO₃ D None of these Submit Answer Try Again Explanation Explanation Washing soda , also known as sodium carbonate , has the chemical formula Na₂CO₃. It is commonly used in cleaning agents and water softeners. Washing soda is a whitish, odourless powder. Show Explanation Previous MCQ All MCQs Next MCQ More MCQs in PPSC 5 Years Past Papers Subject Wise (Solved with Details) Medium Who was the first Prime Minister of Pakistan? Who was the first Prime Minister of Pakistan? Medium Daughter of East was written by ______? Daughter of East was written by ______? Medium The Synonym of BANISH is? The Synonym of BANISH is? Medium What is the duration of the National Anthem of Pakistan? What is the duration of the National Anthem of Pakistan?