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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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Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
1
Easy ppsc

What is the term for the process by which the body maintains a stable internal environment?

  • A Digestion
  • B Homeostasis
  • C Metabolism
  • D Respiration
Permalink
Correct Answer: Option B — Homeostasis
Explanation: Homeostasis refers to the body's ability to maintain stable internal conditions, such as temperature and pH, despite external changes. This regulation involves feedback mechanisms coordinated by the nervous and endocrine systems to sustain optimal cellular function.
Submitted by: PaperMCQs
2
Easy ppsc

What is the primary component of bones and teeth?

  • A Magnesium sulfate
  • B Calcium phosphate
  • C Iron oxide
  • D Calcium carbonate
Permalink
Correct Answer: Option B — Calcium phosphate
Explanation: Bones and teeth are primarily composed of calcium phosphate in the form of hydroxyapatite crystals, providing strength and rigidity. This mineral structure allows bones to support body weight while remaining light enough for movement.
Submitted by: PaperMCQs
3
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
4
Easy fpsc

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

  • A Cosmology
  • B Geology
  • C Astrology
  • D Astronomy
Permalink
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
5
Easy css

What is the primary function of white blood cells?

  • A Clotting blood
  • B Fighting infections
  • C Carrying oxygen
  • D Producing hormones
Permalink
Correct Answer: Option B — Fighting infections
Explanation: White blood cells defend the body against infections by identifying, attacking, and destroying harmful pathogens like bacteria and viruses. They are produced in bone marrow and circulate through the blood and lymphatic system continuously.
Submitted by: PaperMCQs
6
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
7
Easy nts

What is the term for organisms that make their own food using sunlight?

  • A Parasites
  • B Decomposers
  • C Heterotrophs
  • D Autotrophs
Permalink
Correct Answer: Option D — Autotrophs
Explanation: Autotrophs, such as plants and algae, produce their own food through photosynthesis, converting sunlight, water, and carbon dioxide into glucose. They form the base of most food chains, supporting nearly all other life forms.
Submitted by: PaperMCQs
8
Easy pms

Which natural phenomenon is measured using the Richter scale?

  • A Earthquakes
  • B Hurricanes
  • C Volcanic eruptions
  • D Tsunamis
Permalink
Correct Answer: Option A — Earthquakes
Explanation: The Richter scale measures the magnitude of earthquakes based on the energy released at the source. Developed by Charles Richter in 1935, each whole number increase represents roughly 32 times more energy released.
Submitted by: PaperMCQs
9
Easy ppsc

What type of blood cells help the body fight infections?

  • A White blood cells
  • B Platelets
  • C Plasma cells
  • D Red blood cells
Permalink
Correct Answer: Option A — White blood cells
Explanation: White blood cells, or leukocytes, are a key part of the immune system, identifying and destroying pathogens like bacteria, viruses, and fungi. They circulate through the bloodstream and lymphatic system to defend the body from disease.
Submitted by: PaperMCQs
10
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
11
Easy ppsc

What is the term for the loss of biodiversity in an ecosystem?

  • A Migration
  • B Adaptation
  • C Extinction
  • D Evolution
Permalink
Correct Answer: Option C — Extinction
Explanation: Extinction refers to the complete disappearance of a species from Earth, often resulting from habitat loss, climate change, or human activity. Mass extinctions have occurred throughout Earth's history, dramatically reshaping biodiversity patterns.
Submitted by: PaperMCQs
12
Easy nts

Which bird is known for its ability to mimic human speech?

  • A Eagle
  • B Sparrow
  • C Parrot
  • D Crow
Permalink
Correct Answer: Option C — Parrot
Explanation: Parrots are well known for their ability to mimic human speech and other sounds due to their highly developed vocal learning abilities. Species like the African Grey Parrot are particularly noted for their vocabulary and cognitive skills.
Submitted by: PaperMCQs
13
Easy ppsc

What is the process of cell division called?

  • A Fertilization
  • B Osmosis
  • C Mitosis
  • D Meiosis
Permalink
Correct Answer: Option C — Mitosis
Explanation: Mitosis is the process by which a single cell divides into two genetically identical daughter cells, essential for growth and tissue repair in organisms. It differs from meiosis, which produces reproductive cells with half the chromosome number.
Submitted by: PaperMCQs
14
Easy pms

What is the primary function of the respiratory system?

  • A Digestion
  • B Circulation
  • C Gas exchange
  • D Excretion
Permalink
Correct Answer: Option C — Gas exchange
Explanation: The respiratory system's primary function is gas exchange, taking in oxygen and expelling carbon dioxide through the lungs. This process supplies oxygen to the bloodstream for cellular respiration and removes waste gases from the body.
Submitted by: PaperMCQs
15
Easy ppsc

Which planet has the most moons in our solar system?

  • A Mars
  • B Neptune
  • C Saturn
  • D Jupiter
Permalink
Correct Answer: Option C — Saturn
Explanation: Saturn currently holds the record for the most known moons in our solar system, with over 140 confirmed satellites. These range from tiny moonlets to Titan, which is larger than the planet Mercury.
Submitted by: PaperMCQs
16
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
17
Easy pms

What is the study of fungi called?

  • A Mycology
  • B Botany
  • C Entomology
  • D Zoology
Permalink
Correct Answer: Option A — Mycology
Explanation: Mycology is the scientific study of fungi, including their genetic and biochemical properties, taxonomy, and use to humans in food, medicine, and industry. Fungi include yeasts, molds, and mushrooms, playing key ecological roles.
Submitted by: PaperMCQs
18
Easy ppsc

Which vitamin helps in blood clotting?

  • A Vitamin B6
  • B Vitamin E
  • C Vitamin K
  • D Vitamin A
Permalink
Correct Answer: Option C — Vitamin K
Explanation: Vitamin K is essential for synthesizing proteins required for blood clotting, preventing excessive bleeding after injury. It is found in leafy green vegetables and is also produced by bacteria in the human gut.
Submitted by: PaperMCQs
19
Easy css

What is the freezing point of water in Celsius?

  • A -10°C
  • B 5°C
  • C 10°C
  • D 0°C
Permalink
Correct Answer: Option D — 0°C
Explanation: Water freezes at 0°C (32°F) under standard atmospheric pressure, transitioning from liquid to solid state as ice. This temperature can shift slightly with impurities or pressure changes, a principle used in antifreeze solutions.
Submitted by: PaperMCQs
20
Easy css

Which scientist proposed the theory of relativity?

  • A Niels Bohr
  • B Galileo Galilei
  • C Isaac Newton
  • D Albert Einstein
Permalink
Correct Answer: Option D — Albert Einstein
Explanation: Albert Einstein developed the theory of relativity in the early 20th century, revolutionizing our understanding of space, time, and gravity. His famous equation E=mc² established the relationship between mass and energy.
Submitted by: PaperMCQs
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