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NTS MCQs

National Testing Service — Complete MCQ Bank

1,084 Questions
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How to prepare for NTS

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

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241
Chemistry Easy

Which gas is produced when an acid reacts with a metal?

  • AOxygen
  • BHydrogen
  • CNitrogen
  • DCarbon dioxide
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Correct Answer: Option B — Hydrogen
Explanation: When acids react with metals hydrogen gas is produced along with a salt for example zinc reacting with hydrochloric acid produces zinc chloride and hydrogen gas.
Submitted by: PaperMCQs
242
Chemistry Easy

What is the atomic number of carbon?

  • A4
  • B6
  • C8
  • D12
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Correct Answer: Option B — 6
Explanation: Carbon has an atomic number of 6 meaning it has 6 protons in its nucleus and 6 electrons in its neutral state making it the basis of all organic chemistry.
Submitted by: PaperMCQs
243
Chemistry Easy

What is the chemical symbol for water?

  • AH2
  • BHO2
  • CH3O
  • DH2O
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Correct Answer: Option D — H2O
Explanation: Water has the chemical formula H2O consisting of two hydrogen atoms bonded to one oxygen atom through covalent bonds forming a polar molecule.
Submitted by: PaperMCQs
244
Chemistry Easy

Which scientist is known as the Father of Modern Chemistry?

  • AIsaac Newton
  • BRobert Boyle
  • CJohn Dalton
  • DAntoine Lavoisier
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Correct Answer: Option D — Antoine Lavoisier
Explanation: Antoine Lavoisier is known as the Father of Modern Chemistry for establishing the law of conservation of mass and developing a systematic chemical nomenclature.
Submitted by: PaperMCQs
245
Physics Medium

What is the function of an optical fibre?

  • ATo store electrical energy
  • BTo transmit light signals over long distances using total internal reflection
  • CTo measure temperature
  • DTo amplify sound waves
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Correct Answer: Option B — To transmit light signals over long distances using total internal reflection
Explanation: Optical fibres transmit light signals over long distances using total internal reflection within a glass or plastic fibre and are the backbone of modern high-speed internet communications.
Submitted by: PaperMCQs
246
Physics Medium

What is the terminal velocity of a falling object?

  • AMinimum speed during fall
  • BSpeed at which object first starts moving
  • CSpeed independent of mass
  • DMaximum speed reached when weight equals air resistance
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Correct Answer: Option D — Maximum speed reached when weight equals air resistance
Explanation: Terminal velocity is the constant maximum speed reached by a falling object when the downward gravitational force equals the upward air resistance force resulting in zero net force.
Submitted by: PaperMCQs
247
Physics Easy

Which process transfers heat through the movement of fluid currents?

  • AConvection
  • BConduction
  • CRadiation
  • DSublimation
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Correct Answer: Option A — Convection
Explanation: Convection transfers heat through the movement of fluids as warmer less dense fluid rises and cooler denser fluid sinks creating convection currents that distribute thermal energy.
Submitted by: PaperMCQs
248
Physics Medium

Which phenomenon explains why objects appear to weigh less when submerged in water?

  • ASurface tension
  • BBuoyancy
  • CCohesion
  • DAdhesion
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Correct Answer: Option B — Buoyancy
Explanation: Buoyancy is the upward force exerted by a fluid on a submerged object equal to the weight of fluid displaced making objects appear lighter as described by Archimedes' Principle.
Submitted by: PaperMCQs
249
Physics Easy

What is the SI unit of pressure?

  • ANewton
  • BJoule
  • CPascal
  • DWatt
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Correct Answer: Option C — Pascal
Explanation: The Pascal is the SI unit of pressure named after Blaise Pascal and defined as one Newton of force per square metre of area.
Submitted by: PaperMCQs
250
Physics Medium

What is the working principle of a hydraulic press?

  • APascal's law
  • BArchimedes' principle
  • CBernoulli's principle
  • DNewton's third law
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Correct Answer: Option A — Pascal's law
Explanation: A hydraulic press works on Pascal's Law where pressure applied to an enclosed fluid is transmitted equally in all directions allowing a small force to generate a much larger force.
Submitted by: PaperMCQs
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