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PPSC MCQs

Punjab Public Service Commission β€” Complete MCQ Bank

273 Questions
Exam Preparation Guide

How to prepare for PPSC

PPSC examinations recruit candidates for Punjab government departments and commonly test general knowledge, current affairs, English and post-related subjects.

Punjab AffairsGeneral KnowledgeCurrent AffairsEnglish
Give special attention to Punjab geography, history and administration alongside the advertised post’s specialist syllabus.
PPSC preparation illustration
81

Which organ produces the hormone adrenaline that prepares the body for fight or flight response?

  • AThyroid gland
  • BPituitary gland
  • CPancreas
  • DAdrenal gland
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Correct Answer: Option D β€” Adrenal gland
Explanation: The adrenal glands located above the kidneys produce adrenaline which triggers the fight or flight response by increasing heart rate and blood flow to muscles.
Submitted by: PaperMCQs
82

Which planet is the largest in our solar system?

  • AJupiter
  • BMars
  • CSaturn
  • DNeptune
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Correct Answer: Option A β€” Jupiter
Explanation: Jupiter is the largest planet in the solar system with a mass greater than all other planets combined and is known for its Great Red Spot storm.
Submitted by: PaperMCQs
83

Which everyday safety device detects dangerous levels of carbon monoxide in homes?

  • ASmoke detector
  • BCarbon monoxide detector
  • CThermostat
  • DHygrometer
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Correct Answer: Option B β€” Carbon monoxide detector
Explanation: Carbon monoxide detectors are specialized safety devices that detect dangerous levels of this odorless gas in homes alerting occupants before harmful exposure occurs.
Submitted by: PaperMCQs
84

Which colorless and odorless gas is particularly dangerous because it can cause poisoning without detection unless monitored?

  • ANatural gas
  • BCarbon monoxide
  • CHelium
  • DNitrogen
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Correct Answer: Option B β€” Carbon monoxide
Explanation: Carbon monoxide is a colorless and odorless gas produced by incomplete combustion making it particularly dangerous since it can cause poisoning without detection unless monitored by alarms.
Submitted by: PaperMCQs
85

Which common gas leak hazard in homes is often detected by its distinctive rotten egg smell added intentionally for safety?

  • ANatural gas leaks
  • BCarbon monoxide leaks
  • COxygen leaks
  • DNitrogen leaks
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Correct Answer: Option A β€” Natural gas leaks
Explanation: Natural gas is odorless in its pure form so a chemical called mercaptan is intentionally added to give it a rotten egg smell allowing people to detect leaks for safety.
Submitted by: PaperMCQs
86

Which storage practice helps slow down the ripening and spoilage process of most fruits and vegetables?

  • AStoring at room temperature
  • BRefrigeration
  • CStoring in direct sunlight
  • DStoring in plastic without ventilation
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Correct Answer: Option B β€” Refrigeration
Explanation: Refrigeration slows down the ripening and spoilage process of most fruits and vegetables by reducing the rate of enzymatic and microbial activity that causes decay.
Submitted by: PaperMCQs
87

Which common food safety practice prevents cross contamination between raw meat and other foods?

  • AUsing the same cutting board for everything
  • BUsing separate cutting boards for raw meat
  • CWashing hands only after cooking
  • DStoring meat at room temperature
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Correct Answer: Option B β€” Using separate cutting boards for raw meat
Explanation: Using separate cutting boards for raw meat and other foods prevents cross contamination by avoiding the transfer of harmful bacteria from raw meat to ready to eat items.
Submitted by: PaperMCQs
88

Which everyday hygiene practice is most effective in preventing the spread of common cold and flu viruses?

  • AWashing hands frequently
  • BEating spicy food
  • CDrinking cold water
  • DWearing sunglasses
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Correct Answer: Option A β€” Washing hands frequently
Explanation: Washing hands frequently with soap and water removes viruses and bacteria from the skin significantly reducing the risk of spreading common cold and flu infections to others.
Submitted by: PaperMCQs
89

Which type of microorganism is responsible for causing common food spoilage through mold growth?

  • ABacteria
  • BFungi
  • CVirus
  • DProtozoa
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Correct Answer: Option B β€” Fungi
Explanation: Fungi including various molds are responsible for common food spoilage by breaking down organic material and producing visible fuzzy growth on items like bread and fruit.
Submitted by: PaperMCQs
90

Which microorganism is primarily responsible for fermenting sugars into alcohol in brewing and winemaking?

  • ABacteria
  • BYeast
  • CAlgae
  • DProtozoa
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Correct Answer: Option B β€” Yeast
Explanation: Yeast ferments sugars into alcohol and carbon dioxide through anaerobic respiration making it essential for brewing beer producing wine and baking bread.
Submitted by: PaperMCQs