How to prepare for CSS
CSS is Pakistan’s premier federal competitive examination. Strong preparation requires conceptual clarity, broad general knowledge and consistent practice across compulsory and optional areas.

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 type of mirror is used in reflecting telescopes?
Which effect causes the apparent change in frequency of light from a moving star?
What is the unit of magnetic flux in the SI system?
Which effect describes the change in wavelength of X-rays scattered by electrons?
Which scale of temperature is used in thermodynamic calculations and starts at absolute zero?
What is absolute zero temperature in degrees Celsius?
What is the unit of luminous intensity in the SI system?
What is polarisation of light?
Which experiment demonstrated that light behaves as a wave by producing an interference pattern?
What is the phenomenon where two waves superpose to produce regions of maximum and minimum intensity?