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Everyday Science MCQs

303 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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61
Easy ppsc nts

Which animal group is characterised by having a backbone or vertebral column?

  • A Vertebrates
  • B Invertebrates
  • C Arachnids
  • D Arthropods
Permalink
Correct Answer: Option A — Vertebrates
Explanation: Vertebrates are animals characterised by having a backbone or vertebral column and include fish amphibians reptiles birds and mammals.
Submitted by: PaperMCQs
62
Hard css fpsc ppsc

Which type of joint is found in the skull where bones are fixed together and allow no movement?

  • A Fixed joint or suture
  • B Ball and socket
  • C Hinge joint
  • D Gliding joint
Permalink
Correct Answer: Option A — Fixed joint or suture
Explanation: Fixed joints called sutures are found in the skull where bones are tightly interlocked by fibrous tissue allowing no movement providing protection to the brain.
Submitted by: PaperMCQs
63
Medium fpsc ppsc nts

Which everyday substance when mixed with water forms a solution that conducts electricity?

  • A Sugar
  • B Table salt
  • C Sand
  • D Oil
Permalink
Correct Answer: Option B — Table salt
Explanation: Table salt sodium chloride dissolves in water and dissociates into positively charged sodium ions and negatively charged chloride ions which allow electric current to flow through the solution.
Submitted by: PaperMCQs
64
Medium fpsc ppsc nts

Which everyday process involves the removal of dissolved impurities from water by passing it through a bed of sand and gravel?

  • A Chlorination
  • B Reverse osmosis
  • C Distillation
  • D Filtration through sand beds
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Correct Answer: Option D — Filtration through sand beds
Explanation: Sand bed filtration passes water through layers of sand and gravel that trap suspended particles and some bacteria providing one of the main stages in drinking water treatment.
Submitted by: PaperMCQs
65
Easy ppsc nts

Which common acid is found in citrus fruits like lemons and oranges giving them a sour taste?

  • A Acetic acid
  • B Sulfuric acid
  • C Citric acid
  • D Formic acid
Permalink
Correct Answer: Option C — Citric acid
Explanation: Citric acid is the naturally occurring organic acid found abundantly in citrus fruits such as lemons limes and oranges responsible for their distinctive sour or tart taste.
Submitted by: PaperMCQs
66
Medium fpsc ppsc nts

Which common household acid is found in vinegar and gives it its sour taste and smell?

  • A Sulfuric acid
  • B Acetic acid
  • C Hydrochloric acid
  • D Citric acid
Permalink
Correct Answer: Option B — Acetic acid
Explanation: Acetic acid also known as ethanoic acid is the organic acid present in vinegar typically at a concentration of 4 to 8 percent giving it its characteristic sour taste.
Submitted by: PaperMCQs
67
Medium fpsc ppsc nts

Which process in plants involves losing water vapour through stomata helping in cooling and nutrient transport?

  • A Transpiration
  • B Photosynthesis
  • C Respiration
  • D Osmosis
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Correct Answer: Option A — Transpiration
Explanation: Transpiration is the loss of water vapour from plant leaves through stomata which creates a suction force that helps pull water and nutrients up from the roots.
Submitted by: PaperMCQs
68
Medium fpsc ppsc nts

Which part of the plant transports water and minerals from roots to leaves and food from leaves downward?

  • A Root only
  • B Leaf only
  • C Stem through xylem and phloem
  • D Flower only
Permalink
Correct Answer: Option C — Stem through xylem and phloem
Explanation: The stem contains xylem vessels that transport water and minerals upward from roots and phloem vessels that carry glucose produced during photosynthesis downward to other parts.
Submitted by: PaperMCQs
69
Easy fpsc ppsc nts

Which part of the plant conducts photosynthesis and contains stomata for gas exchange?

  • A Root
  • B Stem
  • C Flower
  • D Leaf
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Correct Answer: Option D — Leaf
Explanation: Leaves are the primary site of photosynthesis containing chlorophyll and stomata which allow carbon dioxide in and oxygen and water vapour out during gas exchange.
Submitted by: PaperMCQs
70
Easy ppsc nts

Which part of the plant is responsible for anchoring it in soil and absorbing water and minerals?

  • A Stem
  • B Leaf
  • C Flower
  • D Root
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Correct Answer: Option D — Root
Explanation: Roots anchor the plant in soil and absorb water and dissolved minerals through tiny root hair cells transporting these essential resources up through the stem to the rest of the plant.
Submitted by: PaperMCQs
71
Medium fpsc ppsc nts

Which everyday item uses a bimetallic strip that bends when heated to control temperature in older thermostats?

  • A Thermostat
  • B Compass
  • C Hygrometer
  • D Barometer
Permalink
Correct Answer: Option A — Thermostat
Explanation: Older thermostats use a bimetallic strip that bends when heated because two bonded metals expand at different rates triggering a circuit to switch heating or cooling on and off.
Submitted by: PaperMCQs
72
Easy fpsc ppsc nts

Which part of the water cycle involves water falling from clouds back to the Earth's surface as rain snow or hail?

  • A Evaporation
  • B Precipitation
  • C Condensation
  • D Transpiration
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Correct Answer: Option B — Precipitation
Explanation: Precipitation is the stage of the water cycle where water falls from clouds back to the Earth's surface in various forms including rain snow sleet and hail.
Submitted by: PaperMCQs
73
Easy fpsc ppsc nts

Which part of the water cycle involves water vapour cooling and turning back into liquid water droplets to form clouds?

  • A Evaporation
  • B Condensation
  • C Precipitation
  • D Transpiration
Permalink
Correct Answer: Option B — Condensation
Explanation: Condensation is the part of the water cycle where water vapour cools as it rises and turns back into tiny liquid droplets forming clouds and fog in the atmosphere.
Submitted by: PaperMCQs
74
Easy fpsc ppsc nts

Which process in the water cycle involves the sun's energy turning liquid water into water vapour?

  • A Condensation
  • B Precipitation
  • C Evaporation
  • D Infiltration
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Correct Answer: Option C — Evaporation
Explanation: Evaporation is the process in the water cycle where solar energy heats water in oceans lakes and rivers turning liquid water into water vapour that rises into the atmosphere.
Submitted by: PaperMCQs
75
Easy ppsc nts

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

  • A Periscope
  • B Sonar
  • C Radar
  • D Telescope
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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
76
Medium fpsc ppsc nts

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

  • A The ship displaces a volume of water equal to its weight
  • B Steel is lighter than water
  • C Steel reacts with seawater to reduce density
  • D Ships 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
77
Medium fpsc ppsc nts

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

  • A Electromagnetic wave
  • B Light wave
  • C Sound wave
  • D Radio 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
78
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
Permalink
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
79
Medium fpsc ppsc nts

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

  • A Ice floating in water
  • B A rainbow forming after rain
  • C Sound echoing in a room
  • D A 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
80
Medium css fpsc ppsc

Which type of chemical bond involves the transfer of electrons from one atom to another?

  • A Covalent bond
  • B Ionic bond
  • C Metallic bond
  • D Hydrogen bond
Permalink
Correct Answer: Option B — Ionic bond
Explanation: An ionic bond forms when electrons are transferred from one atom to another creating oppositely charged ions that attract each other as seen in table salt sodium chloride.
Submitted by: PaperMCQs
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