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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.

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901
Physics Medium Uploaded: 06 Aug 2026

Which of the following best describes nuclear fission?

  • ACombining light nuclei to form a heavier nucleus
  • BEmission of alpha particles
  • CSplitting of a heavy nucleus into lighter nuclei
  • DAbsorption of neutrons without splitting
902
Physics Medium Uploaded: 06 Aug 2026

What phenomenon explains why the sky appears blue?

  • ATotal internal reflection
  • BReflection
  • CRefraction
  • DRayleigh scattering
903
Physics Medium Uploaded: 06 Aug 2026

What is the working principle of a transformer based on?

  • AElectrostatic induction
  • BMechanical induction
  • CThermal conduction
  • DElectromagnetic induction
904
Physics Easy Uploaded: 06 Aug 2026

Which force keeps planets in orbit around the sun?

  • AMagnetic force
  • BElectrostatic force
  • CGravitational force
  • DNuclear force
905
Physics Medium Uploaded: 06 Aug 2026

What causes the phenomenon of a rainbow?

  • ARefraction and dispersion of light
  • BReflection of light
  • CDiffraction of light
  • DPolarization of light
906
Physics Easy Uploaded: 06 Aug 2026

What is the SI unit of power?

  • ANewton
  • BPascal
  • CWatt
  • DJoule
907
Physics Easy Uploaded: 06 Aug 2026

Which particle has no electric charge?

  • ANeutron
  • BProton
  • CElectron
  • DPositron
908
Mathematics Hard Uploaded: 05 Aug 2026

solve: 3 × [(8 − 2) ÷ 3] + 4 = ?

  • A5
  • B14
  • C12
  • D10
909
Mathematics Hard Uploaded: 05 Aug 2026

solve: 2³ + (7 − 4) × 3 = ?

  • A19
  • B16
  • C17
  • D22
910
Mathematics Hard Uploaded: 05 Aug 2026

solve: (12 ÷ 3 + 2) × (5 − 2) = ?

  • A18
  • B21
  • C13
  • D20