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CSS MCQs

Civil Superior Services — Complete MCQ Bank

58 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.
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11
Biology Hard Uploaded: 06 Aug 2026

Which part of a plant is primarily responsible for absorbing water from the soil?

  • AStem
  • BLeaf
  • CRoot
  • DFlower
12
Biology Easy Uploaded: 06 Aug 2026

What is the term for the loss of biodiversity due to species dying out completely?

  • AMigration
  • BExtinction
  • CAdaptation
  • DHibernation
13
Biology Medium Uploaded: 06 Aug 2026

Which process converts atmospheric nitrogen into a usable form for plants?

  • APhotosynthesis
  • BRespiration
  • CNitrogen fixation
  • DTranspiration
14
Biology Medium Uploaded: 06 Aug 2026

What is the term for a change in the DNA sequence of an organism?

  • AReplication
  • BTranscription
  • CMutation
  • DTranslation
15
Biology Hard Uploaded: 06 Aug 2026

Which enzyme in saliva begins the digestion of starch?

  • APepsin
  • BAmylase
  • CLipase
  • DTrypsin
16
Biology Easy Uploaded: 06 Aug 2026

What is the term for an organism's habitat and role within an ecosystem?

  • AHabitat
  • BNiche
  • CPopulation
  • DBiome
17
Biology Medium Uploaded: 06 Aug 2026

Which human organ is primarily responsible for filtering blood and producing urine?

  • ALiver
  • BSpleen
  • CPancreas
  • DKidney
18
Biology Medium Uploaded: 06 Aug 2026

What type of bond holds the two strands of DNA together?

  • AIonic bond
  • BCovalent bond
  • CHydrogen bond
  • DMetallic bond
19
Biology Medium Uploaded: 06 Aug 2026

Which vitamin is produced when human skin is exposed to sunlight?

  • AVitamin A
  • BVitamin C
  • CVitamin D
  • DVitamin K
20
Biology Easy Uploaded: 06 Aug 2026

Which molecule carries genetic information in most organisms?

  • ARNA
  • BProtein
  • CLipid
  • DDNA