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NTS MCQs

National Testing Service — Complete MCQ Bank

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

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61
Everyday Science Easy

Which vitamin is produced when ultraviolet light acts on cholesterol in the skin?

  • AVitamin A
  • BVitamin E
  • CVitamin K
  • DVitamin D
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Correct Answer: Option D — Vitamin D
Explanation: Vitamin D is synthesised in the skin when UV-B radiation converts a form of cholesterol into Vitamin D3 which is then processed by the liver and kidneys.
Submitted by: PaperMCQs
62
Everyday Science Easy

Which everyday process is used when a doctor listens to heartbeats through a stethoscope?

  • ARefraction of sound
  • BConduction of sound
  • CAmplification of light
  • DReflection of light
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Correct Answer: Option B — Conduction of sound
Explanation: A stethoscope conducts sound from the chest through the tube to the earpieces amplifying the otherwise faint sounds of heartbeats and breathing.
Submitted by: PaperMCQs
63
Everyday Science Medium

Which gas is used to fill incandescent light bulb to prevent the filament from burning?

  • AOxygen
  • BCarbon dioxide
  • CArgon or nitrogen
  • DHelium
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Correct Answer: Option C — Argon or nitrogen
Explanation: Incandescent bulbs are filled with argon or nitrogen to prevent the tungsten filament from oxidising and burning out quickly extending the bulb's lifespan.
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64
Everyday Science Medium

Which phenomenon causes a needle to deflect when placed near a current-carrying wire?

  • AMagnetism
  • BGravity
  • CStatic electricity
  • DSound waves
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Correct Answer: Option A — Magnetism
Explanation: A current-carrying wire produces a magnetic field around it which deflects a nearby compass needle demonstrating the link between electricity and magnetism.
Submitted by: PaperMCQs
65
Everyday Science Medium

Which everyday material is used as an X-ray absorber to protect the body during medical scans?

  • ACopper
  • BLead
  • CAluminium
  • DSteel
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Correct Answer: Option B — Lead
Explanation: Lead is used as a shield during X-ray procedures because it effectively absorbs harmful ionising radiation protecting body parts not being examined.
Submitted by: PaperMCQs
66
Everyday Science Easy

Which sense organ contains the olfactory receptors responsible for detecting smells?

  • AEars
  • BEyes
  • CNose
  • DTongue
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Correct Answer: Option C — Nose
Explanation: The nose contains olfactory receptors located in the nasal cavity that detect chemical molecules in the air and transmit smell information to the brain.
Submitted by: PaperMCQs
67
Everyday Science Easy

Which common substance has the chemical formula H2O2?

  • AWater
  • BAcetic acid
  • CHydrogen peroxide
  • DAmmonia
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Correct Answer: Option C — Hydrogen peroxide
Explanation: Hydrogen peroxide H2O2 is a common antiseptic used to clean wounds and is also used as a bleaching agent and differs from water by having an extra oxygen atom.
Submitted by: PaperMCQs
68
Everyday Science Hard

Which layer of the skin provides insulation and stores energy as fat?

  • AMelanocyte layer
  • BEpidermis
  • CDermis
  • DHypodermis
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Correct Answer: Option A — Melanocyte layer
Explanation: The hypodermis also called subcutaneous tissue is the deepest skin layer that stores fat for insulation energy reserve and cushioning against physical impact.
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69
Everyday Science Medium

Which everyday process converts mechanical energy into electrical energy in a bicycle dynamo?

  • ARadiation
  • BConduction
  • CElectromagnetic induction
  • DChemical reaction
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Correct Answer: Option C — Electromagnetic induction
Explanation: A bicycle dynamo converts mechanical energy from wheel rotation into electrical energy through electromagnetic induction as a coil rotates within a magnetic field.
Submitted by: PaperMCQs
70
Everyday Science Medium

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 — 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
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