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Everyday Science MCQs

28 Questions Subject Test
Subject Preparation Guide

Prepare Everyday Science with confidence

Understand the science behind daily life through questions covering health, energy, environment, inventions and natural phenomena.

Human BodyEnergyEnvironmentScientific Inventions
Important for general science portions of CSS, PMS, FPSC and provincial tests.
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21
Hard css fpsc

Which everyday principle explains how blood pressure monitors measure pressure in the arteries?

  • A Pascal's law
  • B Bernoulli's principle
  • C Archimedes' principle
  • D Hooke's law
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Correct Answer: Option A — Pascal's law
Explanation: Blood pressure monitors use Pascal's principle where pressure applied to a cuff around the arm transmits through the fluid to measure the pressure in the arterial blood flow.
Submitted by: PaperMCQs
22
Hard css fpsc

Which gas is produced during electrolysis of water at the negative electrode called the cathode?

  • A Oxygen
  • B Nitrogen
  • C Hydrogen
  • D Carbon dioxide
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Correct Answer: Option C — Hydrogen
Explanation: During electrolysis of water hydrogen gas is produced at the negative electrode cathode at twice the volume of oxygen produced at the anode due to water's H2O composition.
Submitted by: PaperMCQs
23
Hard css fpsc

Which gas is produced during the electrolysis of water at the positive electrode called the anode?

  • A Hydrogen
  • B Nitrogen
  • C Oxygen
  • D Carbon dioxide
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Correct Answer: Option C — Oxygen
Explanation: During electrolysis of water oxygen gas is produced at the positive electrode anode while hydrogen gas is produced at the negative electrode cathode in a 1:2 ratio.
Submitted by: PaperMCQs
24
Hard css fpsc ppsc

Which naturally occurring radioactive element was discovered by Marie Curie and named after her home country?

  • A Uranium
  • B Radium
  • C Polonium
  • D Thorium
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Correct Answer: Option C — Polonium
Explanation: Marie Curie discovered polonium in 1898 and named it after her home country Poland making it the first element to be named after a country.
Submitted by: PaperMCQs
25
Hard css fpsc nts

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

  • A Uranus
  • B Neptune
  • C Saturn
  • D Jupiter
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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
26
Hard css fpsc

Which everyday process explains how noise-cancelling headphones work?

  • A Reflecting sound waves outward
  • B Absorbing sound with foam only
  • C Increasing inner air pressure
  • D Generating sound waves that cancel incoming noise
Permalink
Correct Answer: Option D — Generating sound waves that cancel incoming noise
Explanation: Noise-cancelling headphones use microphones to detect ambient sound and generate opposing sound waves that cancel out the incoming noise through destructive interference.
Submitted by: PaperMCQs
27
Hard css fpsc

Which type of radiation has the greatest penetrating power among alpha beta and gamma radiation?

  • A Gamma
  • B Alpha
  • C Beta
  • D All equal
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Correct Answer: Option A — Gamma
Explanation: Gamma radiation has the greatest penetrating power and can pass through dense materials like lead only being significantly blocked by thick lead or concrete shielding.
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28
Hard css fpsc ppsc

Which part of the nervous system is called the automatic system and controls involuntary body functions like digestion?

  • A Somatic nervous system
  • B Central nervous system
  • C Autonomic nervous system
  • D Peripheral nervous system
Permalink
Correct Answer: Option C — Autonomic nervous system
Explanation: The autonomic nervous system regulates involuntary functions like digestion heartbeat and breathing without conscious effort and is divided into sympathetic and parasympathetic divisions.
Submitted by: PaperMCQs
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