Join WhatsApp ChannelDaily MCQs & Exam Updates

Everyday Science MCQs

181 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.
Everyday Science preparation illustration
Subject Test

Test your Everyday Science preparation

Questions are tracked as practiced when you open Show Answer & Explanation. Tracking stays only in this browser tab and no subject-test result is saved.

Practiced MCQs
0 / 181
Use the MCQs you already prepared, or launch a random test from the full subject bank.
No login required Result is not saved Choose your own MCQ count & timer
Choose your test mode
Choose any number up to 181 available MCQs.
Enter 0 for no timer, or choose 1–300 minutes.
Tip: prepare some MCQs first, then start a quick self-check from My Practiced MCQs to test exactly what you studied.
61
Medium fpsc ppsc nts

Which colorless and odorless gas is particularly dangerous because it can cause poisoning without detection unless monitored?

  • A Natural gas
  • B Carbon monoxide
  • C Helium
  • D Nitrogen
Permalink
Correct Answer: Option B — Carbon monoxide
Explanation: Carbon monoxide is a colorless and odorless gas produced by incomplete combustion making it particularly dangerous since it can cause poisoning without detection unless monitored by alarms.
Submitted by: PaperMCQs
62
Medium fpsc ppsc nts

Which common gas leak hazard in homes is often detected by its distinctive rotten egg smell added intentionally for safety?

  • A Natural gas leaks
  • B Carbon monoxide leaks
  • C Oxygen leaks
  • D Nitrogen leaks
Permalink
Correct Answer: Option A — Natural gas leaks
Explanation: Natural gas is odorless in its pure form so a chemical called mercaptan is intentionally added to give it a rotten egg smell allowing people to detect leaks for safety.
Submitted by: PaperMCQs
63
Medium fpsc ppsc nts

Which microorganism is primarily responsible for fermenting sugars into alcohol in brewing and winemaking?

  • A Bacteria
  • B Yeast
  • C Algae
  • D Protozoa
Permalink
Correct Answer: Option B — Yeast
Explanation: Yeast ferments sugars into alcohol and carbon dioxide through anaerobic respiration making it essential for brewing beer producing wine and baking bread.
Submitted by: PaperMCQs
64
Medium fpsc ppsc nts

Which microorganism is primarily responsible for fermenting milk into yogurt?

  • A Yeast
  • B Lactic acid bacteria
  • C Mold
  • D Virus
Permalink
Correct Answer: Option B — Lactic acid bacteria
Explanation: Lactic acid bacteria ferment lactose in milk into lactic acid which thickens the milk and gives yogurt its characteristic tangy flavor and creamy texture.
Submitted by: PaperMCQs
65
Medium fpsc ppsc nts

Which everyday material is commonly used as a natural disinfectant due to its antimicrobial properties?

  • A Sugar
  • B Honey
  • C Salt water alone
  • D Cooking oil
Permalink
Correct Answer: Option B — Honey
Explanation: Honey has natural antimicrobial properties due to its low moisture content and acidic pH making it effective as a natural disinfectant and wound healing aid in traditional medicine.
Submitted by: PaperMCQs
66
Medium fpsc ppsc nts

Which everyday process explains why water boils at a lower temperature at high altitudes such as on mountains?

  • A Lower atmospheric pressure
  • B Higher atmospheric pressure
  • C Increased oxygen levels
  • D Reduced gravity
Permalink
Correct Answer: Option A — Lower atmospheric pressure
Explanation: At high altitudes atmospheric pressure is lower which reduces the boiling point of water meaning it boils at a temperature below 100 degrees Celsius found at sea level.
Submitted by: PaperMCQs
67
Medium fpsc ppsc nts

Which everyday process explains why food cooks faster in a pressure cooker compared to an open pot?

  • A Lower boiling point at high pressure
  • B Higher boiling point at high pressure
  • C Reduced heat transfer
  • D Increased oxygen levels
Permalink
Correct Answer: Option B — Higher boiling point at high pressure
Explanation: A pressure cooker raises internal pressure which increases the boiling point of water allowing food to cook faster at higher temperatures than would be possible in an open pot.
Submitted by: PaperMCQs
68
Medium fpsc ppsc nts

Which optical phenomenon creates the illusion of water on a hot road surface during sunny days?

  • A Rainbow
  • B Mirage
  • C Aurora
  • D Halo
Permalink
Correct Answer: Option B — Mirage
Explanation: A mirage is an optical phenomenon caused by the bending of light through layers of air with varying temperatures creating the illusion of water on hot road surfaces during sunny days.
Submitted by: PaperMCQs
69
Medium fpsc ppsc nts

Which natural phenomenon explains why a compass needle always points toward magnetic north?

  • A Earth's magnetic field
  • B Earth's gravitational field
  • C Earth's rotation
  • D Solar wind
Permalink
Correct Answer: Option A — Earth's magnetic field
Explanation: Earth's magnetic field generated by molten iron movement in its core causes a compass needle to align itself and point toward magnetic north providing a reliable navigation tool.
Submitted by: PaperMCQs
70
Medium fpsc ppsc nts

Which everyday device converts alternating current into direct current for charging electronic devices?

  • A Inverter
  • B Rectifier
  • C Transformer
  • D Generator
Permalink
Correct Answer: Option B — Rectifier
Explanation: A rectifier converts alternating current into direct current and is commonly found inside chargers for electronic devices that require stable DC power for proper operation.
Submitted by: PaperMCQs
71
Medium fpsc ppsc nts

Which everyday device converts direct current into alternating current for household appliance use?

  • A Transformer
  • B Inverter
  • C Generator
  • D Rectifier
Permalink
Correct Answer: Option B — Inverter
Explanation: An inverter converts direct current typically from batteries or solar panels into alternating current allowing household appliances designed for AC power to operate properly.
Submitted by: PaperMCQs
72
Medium fpsc ppsc nts

Which everyday device changes the voltage level of alternating current for transmission or use?

  • A Generator
  • B Transformer
  • C Battery
  • D Inverter
Permalink
Correct Answer: Option B — Transformer
Explanation: A transformer changes the voltage level of alternating current using electromagnetic induction between coils enabling efficient electricity transmission over long distances and safe household use.
Submitted by: PaperMCQs
73
Medium fpsc ppsc nts

Which everyday device uses electromagnetic induction to convert mechanical energy into electrical energy?

  • A Battery
  • B Electric generator
  • C Solar panel
  • D Transformer
Permalink
Correct Answer: Option B — Electric generator
Explanation: An electric generator uses electromagnetic induction by rotating a coil within a magnetic field to convert mechanical energy into electrical energy for widespread power generation.
Submitted by: PaperMCQs
74
Medium fpsc ppsc nts

Which law in physics relates voltage current and resistance in an electrical circuit?

  • A Ohm's law
  • B Newton's law
  • C Boyle's law
  • D Faraday's law
Permalink
Correct Answer: Option A — Ohm's law
Explanation: Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to its resistance forming a foundational principle in electrical circuits.
Submitted by: PaperMCQs
75
Medium fpsc ppsc nts

Which everyday device measures the voltage or potential difference between two points in a circuit?

  • A Ammeter
  • B Voltmeter
  • C Ohmmeter
  • D Galvanometer
Permalink
Correct Answer: Option B — Voltmeter
Explanation: A voltmeter measures the voltage or potential difference between two points in a circuit and is connected in parallel to accurately record the electrical potential without disrupting current flow.
Submitted by: PaperMCQs
76
Medium fpsc ppsc nts

Which everyday device measures electrical current flowing through a circuit?

  • A Voltmeter
  • B Ammeter
  • C Ohmmeter
  • D Wattmeter
Permalink
Correct Answer: Option B — Ammeter
Explanation: An ammeter measures the electrical current flowing through a circuit and is connected in series within the circuit to accurately record the amount of current passing through.
Submitted by: PaperMCQs
77
Medium fpsc ppsc nts

Which scientific law explains that every object attracts every other object with a force proportional to their masses?

  • A Newton's law of universal gravitation
  • B Coulomb's law
  • C Boyle's law
  • D Ohm's law
Permalink
Correct Answer: Option A — Newton's law of universal gravitation
Explanation: Newton's law of universal gravitation explains that every object in the universe attracts every other object with a force proportional to their masses and inversely proportional to the square of the distance between them.
Submitted by: PaperMCQs
78
Medium fpsc ppsc nts

Which force is primarily responsible for keeping planets in orbit around the sun?

  • A Magnetic force
  • B Gravitational force
  • C Electrostatic force
  • D Nuclear force
Permalink
Correct Answer: Option B — Gravitational force
Explanation: Gravitational force between the sun and planets keeps them in stable orbits by continuously pulling them toward the sun while their forward momentum prevents them from falling in.
Submitted by: PaperMCQs
79
Medium fpsc ppsc nts

Which astronomical event marks the day with nearly equal hours of day and night worldwide?

  • A Solstice
  • B Equinox
  • C Perigee
  • D Apogee
Permalink
Correct Answer: Option B — Equinox
Explanation: An equinox marks the day with nearly equal hours of daylight and darkness worldwide occurring twice a year as the sun crosses directly over the equator.
Submitted by: PaperMCQs
80
Medium fpsc ppsc nts

Which astronomical event marks the day with the longest period of daylight in the Northern Hemisphere?

  • A Winter solstice
  • B Summer solstice
  • C Spring equinox
  • D Autumn equinox
Permalink
Correct Answer: Option B — Summer solstice
Explanation: The summer solstice marks the day with the longest period of daylight in the Northern Hemisphere occurring around June 21 when the sun reaches its highest point in the sky.
Submitted by: PaperMCQs
Practiced MCQs0 / 181