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NTS MCQs

National Testing Service — Complete MCQ Bank

1,084 Questions
Exam Preparation Guide

How to prepare for NTS

NTS tests evaluate aptitude, analytical reasoning, quantitative ability, English and subject knowledge for admissions, scholarships and recruitment.

EnglishQuantitative SkillsAnalytical ReasoningSubject Knowledge
Practice under a timer and review weak areas after every test to improve both speed and accuracy.
NTS preparation illustration
481

Who co-invented the World Wide Web (WWW) alongside Robert Cailliau?

  • ATom Berners
  • BMark Zuckerberg
  • CTim Berners-Lee
  • DBill Gates
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Correct Answer: Option C — Tim Berners-Lee
Explanation: Tim Berners-Lee, together with Robert Cailliau, played a key role in developing the World Wide Web at CERN in 1989. Berners-Lee created fundamental web technologies such as HTML, HTTP, and the first web browser. Their work transformed the internet into a user-friendly system for sharing and accessing information worldwide.
Submitted by: Chandi
482

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 — 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
483

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 — 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
484

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 — 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
485

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 — 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
486

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 — 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
487

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 — 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
488

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 — 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
489

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 — 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
490

Which microorganism is primarily responsible for fermenting milk into yogurt?

  • AYeast
  • BLactic acid bacteria
  • CMold
  • DVirus
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Correct Answer: Option B — Lactic acid bacteria
Explanation: Lactic acid bacteria ferment lactose in milk into lactic acid which thickens the milk and gives yogurt its characteristic tangy flavor and creamy texture.
Submitted by: PaperMCQs