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Everyday Science MCQs

74 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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1
Easy fpsc

What is the term for water vapor turning into liquid water?

  • A Precipitation
  • B Sublimation
  • C Evaporation
  • D Condensation
Permalink
Correct Answer: Option D — Condensation
Explanation: Condensation occurs when water vapor cools and transforms back into liquid water droplets, commonly seen as dew or fog formation. It is a key stage in the water cycle, contributing to cloud formation and eventual precipitation.
Submitted by: PaperMCQs
2
Easy fpsc

What is the study of the stars and celestial objects called?

  • A Cosmology
  • B Geology
  • C Astrology
  • D Astronomy
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Correct Answer: Option D — Astronomy
Explanation: Astronomy is the scientific study of celestial objects, including stars, planets, galaxies, and phenomena occurring outside Earth's atmosphere. It differs from astrology, which is not a science but a belief system regarding celestial influence on human affairs.
Submitted by: PaperMCQs
3
Easy fpsc

Which layer of the Earth is primarily composed of molten rock?

  • A Crust
  • B Mantle
  • C Inner core
  • D Outer core
Permalink
Correct Answer: Option B — Mantle
Explanation: The mantle, located beneath Earth's crust, consists largely of semi-molten rock called magma that flows slowly over geological time. This movement drives plate tectonics, contributing to earthquakes, volcanic activity, and continental drift.
Submitted by: PaperMCQs
4
Easy fpsc

What is the main cause of earthquakes?

  • A Volcanic eruptions only
  • B Ocean tides
  • C Wind erosion
  • D Movement of tectonic plates
Permalink
Correct Answer: Option D — Movement of tectonic plates
Explanation: Earthquakes primarily result from the sudden release of energy caused by the movement of tectonic plates along fault lines. This releases seismic waves that shake the Earth's surface, sometimes causing significant structural damage.
Submitted by: PaperMCQs
5
Easy fpsc

Which type of energy is stored in food?

  • A Thermal energy
  • B Electrical energy
  • C Kinetic energy
  • D Chemical energy
Permalink
Correct Answer: Option D — Chemical energy
Explanation: Food stores chemical energy in the bonds of molecules like carbohydrates and fats. When digested, this energy is released and converted by cells into ATP, which powers biological processes throughout the body.
Submitted by: PaperMCQs
6
Easy fpsc

Which gas is commonly used in balloons to make them float?

  • A Helium
  • B Nitrogen
  • C Oxygen
  • D Hydrogen
Permalink
Correct Answer: Option A — Helium
Explanation: Helium is used in balloons because it is lighter than air and non-flammable, unlike hydrogen which poses fire risks. Helium is an inert noble gas widely used in party balloons, airships, and scientific research applications.
Submitted by: PaperMCQs
7
Easy fpsc

What is the normal body temperature of a healthy human in Fahrenheit?

  • A 100.4°F
  • B 98.6°F
  • C 97.0°F
  • D 96.4°F
Permalink
Correct Answer: Option B — 98.6°F
Explanation: The average normal human body temperature is 98.6°F (37°C). It can vary slightly by individual, time of day, and activity level. A temperature above 100.4°F is generally considered a fever requiring medical attention.
Submitted by: PaperMCQs
8
Easy fpsc ppsc nts

Which gas causes the fizzing and bubbling when a carbonated drink bottle is opened?

  • A Oxygen
  • B Nitrogen
  • C Methane
  • D Carbon dioxide
Permalink
Correct Answer: Option D — Carbon dioxide
Explanation: Carbon dioxide dissolved under pressure in carbonated drinks rapidly escapes as gas forming bubbles when the bottle is opened and pressure drops allowing the gas to come out of solution.
Submitted by: PaperMCQs
9
Easy fpsc ppsc nts

Which type of electromagnetic radiation is used in airport security scanners to see through luggage?

  • A X-rays
  • B Ultraviolet
  • C Infrared
  • D Gamma rays
Permalink
Correct Answer: Option A — X-rays
Explanation: X-rays are used in airport security scanners because they penetrate low density materials like clothing but are absorbed by denser materials like metals revealing hidden objects.
Submitted by: PaperMCQs
10
Easy fpsc ppsc nts

Which natural phenomenon occurs when the Earth's crust suddenly releases energy causing ground shaking?

  • A Earthquake
  • B Volcanic eruption
  • C Tsunami
  • D Cyclone
Permalink
Correct Answer: Option A — Earthquake
Explanation: An earthquake occurs when energy stored in the Earth's crust is suddenly released along fault lines causing seismic waves that make the ground shake and can cause widespread damage.
Submitted by: PaperMCQs
11
Easy fpsc ppsc nts

Which phenomenon explains why the handles of pots and pans are made from plastic or wood rather than metal?

  • A Metal is too heavy
  • B Plastic handles are magnetic
  • C Plastic and wood are poor heat conductors preventing burns
  • D Wood handles look better
Permalink
Correct Answer: Option C — Plastic and wood are poor heat conductors preventing burns
Explanation: Plastic and wood are poor conductors of heat meaning little heat transfers from the hot pot or pan to the handle preventing burns when cooking at high temperatures.
Submitted by: PaperMCQs
12
Easy fpsc ppsc nts

Which common safety device in electrical circuits breaks the circuit when current exceeds a safe limit to prevent fires?

  • A Switch
  • B Fuse
  • C Resistor
  • D Capacitor
Permalink
Correct Answer: Option B — Fuse
Explanation: A fuse is a safety device containing a thin wire that melts and breaks the circuit if current exceeds a safe limit protecting appliances and wiring from fire risk.
Submitted by: PaperMCQs
13
Easy fpsc ppsc nts

Which common process happens when iron is exposed to oxygen and moisture over time forming a reddish-brown coating?

  • A Sublimation
  • B Reduction
  • C Neutralisation
  • D Oxidation forming iron oxide rust
Permalink
Correct Answer: Option D — Oxidation forming iron oxide rust
Explanation: Rusting is an oxidation process where iron reacts with oxygen and water to form iron oxide a reddish-brown substance that weakens and corrodes iron structures over time.
Submitted by: PaperMCQs
14
Easy fpsc ppsc nts

Which common everyday substance is used to test for the presence of starch in food by turning blue-black?

  • A Iodine solution
  • B Litmus paper
  • C Benedict's solution
  • D Biuret reagent
Permalink
Correct Answer: Option A — Iodine solution
Explanation: Iodine solution turns blue-black in the presence of starch making it a simple and reliable test for detecting starch in food items during food science investigations.
Submitted by: PaperMCQs
15
Easy fpsc ppsc nts

Which warm-blooded animal group nourishes its young with milk and typically gives birth to live young?

  • A Birds
  • B Reptiles
  • C Amphibians
  • D Mammals
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Correct Answer: Option D — Mammals
Explanation: Mammals are warm-blooded vertebrates that nourish their young with milk secreted from mammary glands most give birth to live young and have body hair or fur.
Submitted by: PaperMCQs
16
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
Permalink
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
17
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
Permalink
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
18
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
Permalink
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
19
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
20
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
Permalink
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
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