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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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Combine daily MCQ practice with analytical reading, vocabulary building and regular revision of national and international affairs.
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Physics Medium Uploaded: 17 Aug 2026

Nuclear reactors typically use which element as fuel?

  • ACarbon
  • BHydrogen
  • CUranium
  • DOxygen
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Physics Easy Uploaded: 17 Aug 2026

Which scientist is credited with developing the special theory of relativity?

  • AIsaac Newton
  • BAlbert Einstein
  • CNiels Bohr
  • DMax Planck
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Physics Easy Uploaded: 17 Aug 2026

The de Broglie hypothesis proposed that particles such as electrons exhibit:

  • ANo measurable properties
  • BOnly wave nature
  • CBoth wave and particle nature
  • DOnly particle nature
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Physics Medium Uploaded: 17 Aug 2026

Quantum mechanics primarily deals with the behavior of:

  • AMacroscopic objects
  • BLarge celestial bodies
  • CSubatomic particles
  • DFluids in motion
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Physics Medium Uploaded: 17 Aug 2026

The electron was discovered by:

  • ANiels Bohr
  • BJ.J. Thomson
  • CJames Chadwick
  • DErnest Rutherford
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Physics Hard Uploaded: 17 Aug 2026

X-rays were discovered by:

  • AErnest Rutherford
  • BMarie Curie
  • CWilhelm Rontgen
  • DNiels Bohr
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Physics Medium Uploaded: 17 Aug 2026

According to Einstein's mass-energy equivalence, E equals:

  • Amc
  • Bmc^2
  • Cmc^3
  • Dm/c
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Physics Easy Uploaded: 17 Aug 2026

The photoelectric effect demonstrates that light behaves as a:

  • AParticle only
  • BNeither wave nor particle
  • CWave only
  • DBoth wave and particle
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Physics Easy Uploaded: 17 Aug 2026

The photoelectric effect was explained by:

  • ANewton
  • BFaraday
  • CEinstein
  • DMaxwell
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Physics Medium Uploaded: 17 Aug 2026

A series circuit has:

  • ANo current flow
  • BOnly one path for current flow
  • CMultiple paths for current flow
  • DInfinite resistance