Join WhatsApp ChannelDaily MCQs & Exam Updates

CSS MCQs

Civil Superior Services — Complete MCQ Bank

1,939 Questions
Exam Preparation Guide

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.

Pakistan AffairsCurrent AffairsEnglishEveryday Science
Combine daily MCQ practice with analytical reading, vocabulary building and regular revision of national and international affairs.
CSS preparation illustration
1141
Physics Hard Uploaded: 13 Jul 2026

Which type of mirror is used in reflecting telescopes?

  • APlane mirror
  • BParabolic concave mirror
  • CConvex mirror
  • DCylindrical mirror
1142
Physics Hard Uploaded: 13 Jul 2026

Which effect causes the apparent change in frequency of light from a moving star?

  • APhotoelectric effect
  • BCompton effect
  • CZeeman effect
  • DDoppler effect
1143
Physics Hard Uploaded: 13 Jul 2026

What is the unit of magnetic flux in the SI system?

  • ATesla
  • BWeber
  • CAmpere
  • DFarad
1144
Physics Hard Uploaded: 13 Jul 2026

Which effect describes the change in wavelength of X-rays scattered by electrons?

  • APhotoelectric effect
  • BCompton effect
  • CZeeman effect
  • DHall effect
1145
Physics Medium Uploaded: 13 Jul 2026

Which scale of temperature is used in thermodynamic calculations and starts at absolute zero?

  • AKelvin
  • BCelsius
  • CFahrenheit
  • DRankine
1146
Physics Medium Uploaded: 13 Jul 2026

What is absolute zero temperature in degrees Celsius?

  • A0 degrees Celsius
  • Bminus 100 degrees Celsius
  • Cminus 273 degrees Celsius
  • Dminus 373 degrees Celsius
1147
Physics Hard Uploaded: 13 Jul 2026

What is the unit of luminous intensity in the SI system?

  • ALux
  • BLumen
  • CWatt
  • DCandela
1148
Physics Hard Uploaded: 13 Jul 2026

What is polarisation of light?

  • ASplitting light into its spectrum
  • BRestriction of light vibrations to a single plane
  • CBending of light around obstacles
  • DTotal reflection of light
1149
Physics Medium Uploaded: 13 Jul 2026

Which experiment demonstrated that light behaves as a wave by producing an interference pattern?

  • AYoung's double slit experiment
  • BRutherford's gold foil experiment
  • CMillikan's oil drop experiment
  • DCompton scattering experiment
1150
Physics Medium Uploaded: 13 Jul 2026

What is the phenomenon where two waves superpose to produce regions of maximum and minimum intensity?

  • AInterference
  • BDiffraction
  • CRefraction
  • DPolarisation