Join WhatsApp ChannelDaily MCQs & Exam Updates

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.
Start PracticingTake a Mock Test
NTS preparation illustration
All Subjects Biology Chemistry Computer Science Current Affairs English Everyday Science General Knowledge Islamic Studies Mathematics Pakistan Studies Physics
391
Everyday Science Easy

Which device is used in submarines to see objects above the water surface without surfacing?

  • APeriscope
  • BSonar
  • CRadar
  • DTelescope
Permalink
Correct Answer: Option A — Periscope
Explanation: A periscope uses mirrors or prisms arranged at angles to reflect light allowing a submerged submarine or a person in a trench to see objects above without being visible.
Submitted by: PaperMCQs
392
Everyday Science Medium

Which everyday phenomenon explains why a ship made of steel can float despite steel being denser than water?

  • AThe ship displaces a volume of water equal to its weight
  • BSteel is lighter than water
  • CSteel reacts with seawater to reduce density
  • DShips contain compressed air making them float
Permalink
Correct Answer: Option A — The ship displaces a volume of water equal to its weight
Explanation: A steel ship floats because its hollow shape displaces a large volume of water whose weight equals the ship's weight satisfying Archimedes' principle even though steel itself sinks.
Submitted by: PaperMCQs
393
Everyday Science Medium

Which type of wave requires a material medium to travel and cannot propagate through vacuum?

  • AElectromagnetic wave
  • BLight wave
  • CSound wave
  • DRadio wave
Permalink
Correct Answer: Option C — Sound wave
Explanation: Sound is a mechanical wave that requires a material medium such as air water or solid to propagate and cannot travel through a vacuum unlike electromagnetic waves.
Submitted by: PaperMCQs
394
Everyday Science Medium

Which everyday phenomenon demonstrates that objects at higher temperature emit more thermal radiation?

  • AIce floating in water
  • BA rainbow forming after rain
  • CSound echoing in a room
  • DA red hot iron glowing
Permalink
Correct Answer: Option D — A red hot iron glowing
Explanation: A red hot iron glowing demonstrates that objects emit electromagnetic radiation including visible light when heated to sufficient temperatures and emit more radiation at higher temperatures.
Submitted by: PaperMCQs
395
Everyday Science Medium

Which everyday phenomenon explains how a guitar produces different musical notes when different strings are plucked?

  • AAll strings vibrate at the same frequency
  • BLonger strings produce higher pitch
  • CStrings of different mass and tension vibrate at different frequencies
  • DThicker strings always produce higher notes
Permalink
Correct Answer: Option C — Strings of different mass and tension vibrate at different frequencies
Explanation: Guitar strings of different thickness and tension vibrate at different natural frequencies when plucked producing different musical pitches from deep bass to high treble notes.
Submitted by: PaperMCQs
396
Everyday Science Medium

Which part of the human body regulates temperature through sweating and blood vessel dilation?

  • ALiver
  • BLungs
  • CSkin
  • DKidney
Permalink
Correct Answer: Option C — Skin
Explanation: The skin regulates body temperature through sweating to cool down and constricting or dilating blood vessels to retain or release heat maintaining thermal homeostasis.
Submitted by: PaperMCQs
397
Everyday Science Medium

Which household disinfectant chemical is commonly used to purify drinking water in small quantities?

  • AChlorine
  • BSulfuric acid
  • CHydrochloric acid
  • DAmmonia
Permalink
Correct Answer: Option A — Chlorine
Explanation: Chlorine is commonly added in small safe quantities to drinking water supplies to kill bacteria viruses and other pathogens making the water safe for human consumption.
Submitted by: PaperMCQs
398
Everyday Science Easy

Which phenomenon is responsible for the formation of a shadow?

  • ARefraction
  • BRectilinear propagation of light
  • CAbsorption
  • DDispersion
Permalink
Correct Answer: Option B — Rectilinear propagation of light
Explanation: Shadows form because light travels in straight lines and when an opaque object blocks the light path a region of darkness called a shadow forms behind the object.
Submitted by: PaperMCQs
399
Everyday Science Easy

What is the approximate speed of light in a vacuum?

  • A300 km per second
  • B3000 km per second
  • C300000 km per second
  • D3000000 km per second
Permalink
Correct Answer: Option C — 300000 km per second
Explanation: Light travels at approximately 300000 kilometres per second in a vacuum making it the fastest known phenomenon in the universe and a fundamental constant in physics.
Submitted by: PaperMCQs
400
Everyday Science Medium

Which everyday device changes alternating current from power lines to the lower voltages suitable for homes?

  • ATransformer
  • BGenerator
  • CBattery
  • DInverter
Permalink
Correct Answer: Option A — Transformer
Explanation: Transformers step down the high voltage alternating current from power transmission lines to the lower voltages suitable for safe use in residential and commercial buildings.
Submitted by: PaperMCQs
Other Exams
CSS MCQs PMS MCQs FPSC MCQs PPSC MCQs NTS MCQs
Mock Tests
Quick Test (20 Q) Full Mock (60 Q)