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NTS MCQs

National Testing Service — Complete MCQ Bank

262 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
51

Which common kitchen equipment uses microwave radiation to heat food by exciting water molecules?

  • AConventional oven
  • BMicrowave oven
  • CInduction cooker
  • DPressure cooker
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Correct Answer: Option B — Microwave oven
Explanation: A microwave oven uses microwave radiation to excite water molecules within food generating heat from within rather than from an external heat source enabling faster cooking.
Submitted by: PaperMCQs
52

Which planet in the solar system rotates on its side with an axial tilt of about 98 degrees?

  • AUranus
  • BNeptune
  • CSaturn
  • DJupiter
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Correct Answer: Option A — Uranus
Explanation: Uranus has an extreme axial tilt of about 98 degrees meaning it essentially rotates on its side likely caused by a massive collision during the early solar system.
Submitted by: PaperMCQs
53

Which chemical element has the highest melting point of all pure metals, used in light bulb filaments?

  • AIron
  • BTungsten
  • CPlatinum
  • DTitanium
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Correct Answer: Option B — Tungsten
Explanation: Tungsten has the highest melting point of all pure metals at about 3422 degrees Celsius making it ideal for light bulb filaments that must withstand intense heat without melting.
Submitted by: PaperMCQs
54

Which gas makes up approximately 0.04 percent of Earth's atmosphere and is essential for plant photosynthesis?

  • AOxygen
  • BCarbon dioxide
  • CNitrogen
  • DArgon
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Correct Answer: Option B — Carbon dioxide
Explanation: Carbon dioxide makes up about 0.04 percent of Earth's atmosphere and despite its small concentration it is essential for photosynthesis and plays a major role in climate regulation.
Submitted by: PaperMCQs
55

Which common household item works based on the principle of Pascal's law?

  • AKnife
  • BThermometer
  • CHydraulic jack
  • DBarometer
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Correct Answer: Option C — Hydraulic jack
Explanation: A hydraulic jack uses Pascal's law where pressure applied to a confined fluid is transmitted equally in all directions allowing a small force to lift heavy loads.
Submitted by: PaperMCQs
56

Which gas is released when metals like zinc react with dilute hydrochloric acid?

  • AOxygen
  • BCarbon dioxide
  • CHydrogen
  • DNitrogen
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Correct Answer: Option C — Hydrogen
Explanation: When zinc reacts with dilute hydrochloric acid hydrogen gas is produced along with zinc chloride and this reaction is a standard laboratory method to generate hydrogen.
Submitted by: PaperMCQs
57

Which everyday observation shows that hot air rises and cool air sinks creating circulation?

  • ABoiling water forming convection currents
  • BIce melting in sunlight
  • CMetal expanding when heated
  • DSound echoing in a hall
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Correct Answer: Option A — Boiling water forming convection currents
Explanation: Boiling water shows convection currents as hot less-dense water rises to the surface while cooler denser water sinks demonstrating natural thermal circulation.
Submitted by: PaperMCQs
58

Which process allows a submarine to sink or rise by adjusting water in ballast tanks?

  • AChanging buoyancy through water displacement
  • BEvaporation
  • COsmosis
  • DThermal expansion
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Correct Answer: Option A — Changing buoyancy through water displacement
Explanation: Submarines control their depth by filling or emptying ballast tanks with water to change their overall density relative to the surrounding water adjusting buoyancy.
Submitted by: PaperMCQs
59

Which common ailment is caused by the Helicobacter pylori bacterium?

  • ACommon cold
  • BStomach ulcers
  • CMalaria
  • DChickenpox
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Correct Answer: Option B — Stomach ulcers
Explanation: Helicobacter pylori is a bacterium that infects the stomach lining causing inflammation that can lead to peptic ulcers and is treatable with antibiotics.
Submitted by: PaperMCQs
60

Which phenomenon explains why a straw placed in a drink allows liquid to be sucked upward?

  • AGravity pulling liquid
  • BMagnetic force
  • CAtmospheric pressure pushing liquid up
  • DSurface tension alone
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Correct Answer: Option C — Atmospheric pressure pushing liquid up
Explanation: When you suck on a straw you reduce air pressure inside it and the greater atmospheric pressure outside pushes the liquid upward into your mouth.
Submitted by: PaperMCQs