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Everyday Science MCQs

95 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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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 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
4
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
5
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
6
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
7
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
8
Easy ppsc

What is the study of heredity called?

  • A Ecology
  • B Genetics
  • C Physiology
  • D Anatomy
Permalink
Correct Answer: Option B — Genetics
Explanation: Genetics is the branch of biology concerned with how traits are passed from parents to offspring through genes. Gregor Mendel is regarded as the father of genetics for his pioneering work on pea plant inheritance patterns.
Submitted by: PaperMCQs
9
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
10
Easy ppsc nts

Which planet is known as the Blue Planet due to its large amount of surface water?

  • A Mars
  • B Earth
  • C Venus
  • D Saturn
Permalink
Correct Answer: Option B — Earth
Explanation: Earth is called the Blue Planet because approximately 71 percent of its surface is covered by water giving it a distinctive blue appearance when viewed from space.
Submitted by: PaperMCQs
11
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
12
Easy ppsc nts

Which process in bread making causes dough to rise releasing CO2?

  • A Oxidation of flour
  • B Protein denaturation
  • C Fermentation by yeast
  • D Sublimation of water
Permalink
Correct Answer: Option C — Fermentation by yeast
Explanation: Yeast in bread dough ferments sugars and releases carbon dioxide gas which gets trapped in the dough forming bubbles causing it to rise and giving bread its light airy texture.
Submitted by: PaperMCQs
13
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
14
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
15
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
16
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
17
Easy ppsc nts

Which type of teeth are flat and chisel-shaped primarily used for cutting and biting food?

  • A Canines
  • B Molars
  • C Premolars
  • D Incisors
Permalink
Correct Answer: Option D — Incisors
Explanation: Incisors are the eight flat chisel-shaped front teeth four in each jaw used primarily for cutting and biting into food during eating.
Submitted by: PaperMCQs
18
Easy ppsc nts

Which organ in the human body stores and concentrates urine before it is excreted?

  • A Kidney
  • B Urethra
  • C Ureter
  • D Bladder
Permalink
Correct Answer: Option D — Bladder
Explanation: The urinary bladder stores urine produced by the kidneys until it is expelled from the body through the urethra during urination.
Submitted by: PaperMCQs
19
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
20
Easy ppsc nts

Which cold-blooded vertebrate group lives entirely in water breathing through gills throughout its life?

  • A Fish
  • B Amphibians
  • C Reptiles
  • D Mammals
Permalink
Correct Answer: Option A — Fish
Explanation: Fish are cold-blooded aquatic vertebrates that breathe through gills throughout their entire lives extracting dissolved oxygen from water as they swim.
Submitted by: PaperMCQs
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