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 principle states that it is impossible to simultaneously know the exact position and momentum of a particle?
What is the name of the quantum of electromagnetic radiation?
Who explained the photoelectric effect and won the Nobel Prize for it in 1921?
Which effect describes the emission of electrons from a metal surface when light of sufficient frequency falls on it?
What is the phenomenon where certain materials offer zero electrical resistance below a critical temperature?
Which law states that the induced EMF in a conductor is proportional to the rate of change of magnetic flux?
Which law relates the force between two electric charges to the distance between them?
Which type of nuclear reaction combines light nuclei to form a heavier nucleus releasing energy?