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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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61
Easy fpsc ppsc nts

Which common food item is a good source of dietary fiber important for digestive health?

  • A White bread
  • B Whole grains
  • C Refined sugar
  • D Processed cheese
Permalink
Correct Answer: Option B — Whole grains
Explanation: Whole grains are an excellent source of dietary fiber which supports healthy digestion regulates blood sugar levels and helps maintain overall gastrointestinal health.
Submitted by: PaperMCQs
62
Easy fpsc ppsc nts

Which renewable energy source generates electricity by harnessing the flow of water through dams or rivers?

  • A Solar energy
  • B Wind energy
  • C Hydropower
  • D Geothermal energy
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Correct Answer: Option C — Hydropower
Explanation: Hydropower generates electricity by harnessing the kinetic energy of flowing water typically through dams or river turbines making it one of the oldest renewable energy sources used worldwide.
Submitted by: PaperMCQs
63
Easy fpsc ppsc nts

Which renewable energy source uses moving air currents to generate electricity through turbines?

  • A Solar energy
  • B Wind energy
  • C Hydropower
  • D Biomass energy
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Correct Answer: Option B — Wind energy
Explanation: Wind energy uses moving air currents to rotate large turbine blades which drive generators to produce electricity offering a clean and increasingly cost effective renewable power source.
Submitted by: PaperMCQs
64
Easy fpsc ppsc nts

Which renewable energy source harnesses sunlight directly to generate electricity?

  • A Wind energy
  • B Solar energy
  • C Hydropower
  • D Geothermal energy
Permalink
Correct Answer: Option B — Solar energy
Explanation: Solar energy harnesses sunlight directly using photovoltaic cells to generate electricity providing a clean and renewable alternative to fossil fuel based power generation.
Submitted by: PaperMCQs
65
Easy fpsc ppsc nts

Which everyday chemical reaction is responsible for rusting of iron objects?

  • A Oxidation
  • B Reduction
  • C Neutralization
  • D Sublimation
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Correct Answer: Option A — Oxidation
Explanation: Rusting is an oxidation reaction where iron reacts with oxygen and moisture in the air forming iron oxide which weakens and corrodes metal structures over time.
Submitted by: PaperMCQs
66
Easy fpsc ppsc nts

Which natural disaster is measured using the Richter scale?

  • A Hurricanes
  • B Earthquakes
  • C Floods
  • D Tornadoes
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Correct Answer: Option B — Earthquakes
Explanation: The Richter scale is used to measure the magnitude of earthquakes based on the amplitude of seismic waves recorded by seismographs at monitoring stations.
Submitted by: PaperMCQs
67
Easy fpsc ppsc nts

Which common kitchen substance is used as a natural antacid due to its alkaline properties?

  • A Vinegar
  • B Baking soda
  • C Lemon juice
  • D Salt
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Correct Answer: Option B — Baking soda
Explanation: Baking soda sodium bicarbonate is commonly used as a natural antacid because its alkaline properties help neutralize excess stomach acid relieving symptoms of indigestion and heartburn.
Submitted by: PaperMCQs
68
Easy fpsc ppsc nts

Which type of energy is stored in the chemical bonds of food and fuels?

  • A Kinetic energy
  • B Potential energy
  • C Chemical energy
  • D Thermal energy
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Correct Answer: Option C — Chemical energy
Explanation: Chemical energy is stored in the bonds between atoms in food and fuels and is released through chemical reactions such as digestion or combustion to perform useful work.
Submitted by: PaperMCQs
69
Easy fpsc ppsc nts

Which gas is primarily responsible for the greenhouse effect contributing most to global warming?

  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Helium
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Correct Answer: Option B — Carbon dioxide
Explanation: Carbon dioxide is the primary greenhouse gas contributing to global warming as it traps heat in the atmosphere due to human activities like fossil fuel combustion and deforestation.
Submitted by: PaperMCQs
70
Easy fpsc ppsc nts

Which natural phenomenon results from the dispersion of sunlight through water droplets in the atmosphere?

  • A Aurora
  • B Rainbow
  • C Mirage
  • D Halo
Permalink
Correct Answer: Option B — Rainbow
Explanation: A rainbow forms when sunlight is refracted reflected and dispersed through water droplets in the atmosphere splitting white light into its constituent spectral colors.
Submitted by: PaperMCQs
71
Easy fpsc ppsc nts

Which gas do plants primarily absorb during photosynthesis?

  • A Oxygen
  • B Carbon dioxide
  • C Nitrogen
  • D Hydrogen
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Correct Answer: Option B — Carbon dioxide
Explanation: Plants absorb carbon dioxide from the atmosphere during photosynthesis using sunlight and water to convert it into glucose and oxygen which is released as a byproduct.
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72
Easy fpsc ppsc nts

Which organ in the human body is primarily responsible for filtering blood and removing waste?

  • A Liver
  • B Kidney
  • C Spleen
  • D Pancreas
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Correct Answer: Option B — Kidney
Explanation: The kidneys filter blood to remove metabolic waste products and excess fluids excreting them as urine while also regulating electrolyte balance and blood pressure in the body.
Submitted by: PaperMCQs
73
Easy fpsc ppsc nts

Which vitamin is primarily synthesized in human skin upon sunlight exposure?

  • A Vitamin A
  • B Vitamin C
  • C Vitamin D
  • D Vitamin K
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Correct Answer: Option C — Vitamin D
Explanation: Vitamin D is synthesized in the skin when exposed to ultraviolet B rays from sunlight and is essential for calcium absorption and maintaining healthy bones and immune function.
Submitted by: PaperMCQs
74
Easy fpsc ppsc nts

Which part of the human eye controls the amount of light entering it?

  • A Retina
  • B Cornea
  • C Iris
  • D Lens
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Correct Answer: Option C — Iris
Explanation: The iris is the colored muscular structure that controls pupil size thereby regulating the amount of light entering the eye to ensure clear vision under varying light conditions.
Submitted by: PaperMCQs
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