Civil Superior Services — Complete MCQ Bank
CSS is Pakistan’s premier federal competitive examination. Strong preparation requires conceptual clarity, broad general knowledge and consistent practice across compulsory and optional areas.
Which scientist developed the theory of general relativity extending special relativity to include gravity?
Which element has the highest electronegativity of all elements on the Pauling scale?
Which chemical process converts vegetable oils into solid fats by adding hydrogen gas?
Which type of organic reaction adds atoms across a carbon to carbon double bond in alkenes?
Which process adds water to a compound to break chemical bonds in organic reactions?
What is the chemical formula for ethanoic acid commonly found in vinegar?
Which process hardens rubber by adding sulfur making it stronger and more elastic?
Which process by which bacteria take up free DNA from their environment was discovered by Griffith?
Which type of white blood cell produces specific antibodies against antigens?
Which plant hormone signals guard cells to close stomata during drought conditions?