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Everyday Science MCQs

114 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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Subject Test

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41
Easy ppsc nts

Which cold-blooded animal group is covered in scales breathes air through lungs and lays eggs on land?

  • A Amphibians
  • B Reptiles
  • C Fish
  • D Arthropods
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Correct Answer: Option B — Reptiles
Explanation: Reptiles are cold-blooded animals covered in scales that breathe through lungs and typically lay leathery eggs on land including snakes lizards turtles and crocodiles.
Submitted by: PaperMCQs
42
Easy fpsc ppsc nts

Which type of animal can live both on land and in water, such as frogs and toads?

  • A Reptiles
  • B Mammals
  • C Amphibians
  • D Fish
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Correct Answer: Option C — Amphibians
Explanation: Amphibians are cold-blooded animals adapted to live both on land and in water breathing through gills as larvae and developing lungs as adults examples include frogs toads and salamanders.
Submitted by: PaperMCQs
43
Easy ppsc nts

Which animal group lacks a backbone and includes insects worms and molluscs?

  • A Vertebrates
  • B Amphibians
  • C Reptiles
  • D Invertebrates
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Correct Answer: Option D — Invertebrates
Explanation: Invertebrates are animals that lack a backbone representing approximately 97 percent of all animal species including insects worms spiders and molluscs.
Submitted by: PaperMCQs
44
Easy ppsc nts

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

  • A Vertebrates
  • B Invertebrates
  • C Arachnids
  • D Arthropods
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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
45
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
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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
46
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
47
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
48
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
49
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
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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
50
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
51
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
52
Easy fpsc ppsc nts

Which phenomenon is responsible for the formation of a shadow?

  • A Refraction
  • B Rectilinear propagation of light
  • C Absorption
  • D Dispersion
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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
53
Easy fpsc ppsc nts

What is the approximate speed of light in a vacuum?

  • A 300 km per second
  • B 3000 km per second
  • C 300000 km per second
  • D 3000000 km per second
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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
54
Easy fpsc ppsc nts

Which human body system is primarily responsible for fighting infections and diseases?

  • A Digestive system
  • B Immune system
  • C Skeletal system
  • D Excretory system
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Correct Answer: Option B — Immune system
Explanation: The immune system is the body's primary defense against infections and diseases using white blood cells antibodies and lymph nodes to detect and destroy pathogens.
Submitted by: PaperMCQs
55
Easy ppsc nts

Which common kitchen equipment uses microwave radiation to heat food by exciting water molecules?

  • A Conventional oven
  • B Microwave oven
  • C Induction cooker
  • D Pressure cooker
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Correct Answer: Option B — Microwave oven
Explanation: A microwave oven uses microwave radiation to excite water molecules within food generating heat from within rather than from an external heat source enabling faster cooking.
Submitted by: PaperMCQs
56
Easy fpsc ppsc nts

Which everyday observation shows that hot air rises and cool air sinks creating circulation?

  • A Boiling water forming convection currents
  • B Ice melting in sunlight
  • C Metal expanding when heated
  • D Sound echoing in a hall
Permalink
Correct Answer: Option A — Boiling water forming convection currents
Explanation: Boiling water shows convection currents as hot less-dense water rises to the surface while cooler denser water sinks demonstrating natural thermal circulation.
Submitted by: PaperMCQs
57
Easy fpsc ppsc nts

Which vitamin is produced when ultraviolet light acts on cholesterol in the skin?

  • A Vitamin A
  • B Vitamin E
  • C Vitamin K
  • D Vitamin D
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Correct Answer: Option D — Vitamin D
Explanation: Vitamin D is synthesised in the skin when UV-B radiation converts a form of cholesterol into Vitamin D3 which is then processed by the liver and kidneys.
Submitted by: PaperMCQs
58
Easy fpsc ppsc nts

Which everyday process is used when a doctor listens to heartbeats through a stethoscope?

  • A Refraction of sound
  • B Conduction of sound
  • C Amplification of light
  • D Reflection of light
Permalink
Correct Answer: Option B — Conduction of sound
Explanation: A stethoscope conducts sound from the chest through the tube to the earpieces amplifying the otherwise faint sounds of heartbeats and breathing.
Submitted by: PaperMCQs
59
Easy ppsc nts

Which sense organ contains the olfactory receptors responsible for detecting smells?

  • A Ears
  • B Eyes
  • C Nose
  • D Tongue
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Correct Answer: Option C — Nose
Explanation: The nose contains olfactory receptors located in the nasal cavity that detect chemical molecules in the air and transmit smell information to the brain.
Submitted by: PaperMCQs
60
Easy fpsc ppsc nts

Which common substance has the chemical formula H2O2?

  • A Water
  • B Acetic acid
  • C Hydrogen peroxide
  • D Ammonia
Permalink
Correct Answer: Option C — Hydrogen peroxide
Explanation: Hydrogen peroxide H2O2 is a common antiseptic used to clean wounds and is also used as a bleaching agent and differs from water by having an extra oxygen atom.
Submitted by: PaperMCQs
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