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CSS MCQs

Civil Superior Services — Complete MCQ Bank

1,970 Questions
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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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101
Everyday Science Hard Uploaded: 01 Sep 2026

Which of the following vitamins is synthesized by bacteria in the human intestine?

  • AVitamin K
  • BVitamin A
  • CVitamin C
  • DVitamin D
102
Everyday Science Medium Uploaded: 01 Sep 2026

The scientific term for the process of blood clot formation is:

  • ACoagulation
  • BCirculation
  • CFiltration
  • DOxidation
103
Everyday Science Medium Uploaded: 01 Sep 2026

Which of the following is the main reason ice floats on water?

  • AIce is less dense than water
  • BIce is warmer than water
  • CIce has more oxygen
  • DIce contains air bubbles only
104
Everyday Science Easy Uploaded: 01 Sep 2026

The process by which new species arise through gradual change over time is called:

  • AAdaptation
  • BMutation
  • CSelection
  • DEvolution
105
Everyday Science Easy Uploaded: 01 Sep 2026

Which of the following is a common antibiotic derived from a fungus?

  • AAspirin
  • BPenicillin
  • CParacetamol
  • DInsulin
106
Everyday Science Hard Uploaded: 01 Sep 2026

The scientific term for an organism that can survive in extreme environmental conditions is:

  • AAutotroph
  • BHeterotroph
  • CSaprophyte
  • DExtremophile
107
Everyday Science Easy Uploaded: 01 Sep 2026

Which of the following vitamins is important for wound healing and immune function?

  • AVitamin A
  • BVitamin C
  • CVitamin D
  • DVitamin K
108
Everyday Science Medium Uploaded: 01 Sep 2026

The main function of the cerebrum in the human brain is to:

  • AControl heartbeat
  • BCoordinate movement
  • CRegulate blood pressure
  • DProcess thought and voluntary actions
109
Everyday Science Easy Uploaded: 01 Sep 2026

Which of the following is the main function of platelets in blood?

  • AAid in clotting
  • BTransport nutrients
  • CFight infection
  • DRegulate temperature
110
Everyday Science Medium Uploaded: 01 Sep 2026

The primary function of the lymphatic system is to:

  • ATransport oxygen
  • BDigest fats
  • CSupport the immune system
  • DRegulate blood pressure