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Everyday Science 2124 MCQs [All-Courses]

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Our content covers Physics, Chemistry, Biology, Environment, Human Body, Inventions, Scientific Laws, and daily-life science concepts.
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_______is a key gland that plays a crucial role in digestion by producing enzymes that break down carbohydrates, proteins, and fats, and also secretes bicarbonate to neutralize stomach acid.
A Pancreas
B Gallbladder
C Thyroid
D Liver
Correct Answer: Pancreas
Explanation:

  • The pancreas is a gland located behind the stomach.
  • It produces insulin and other hormones to regulate blood sugar and enzymes to help digest food.
  • The pancreas plays a key role in both the digestive and endocrine systems.

Malaria is spread through:
A Bacteria
B Virus
C Plasmodium
D Anopheles
Correct Answer: Anopheles
Explanation:

  • The mosquito carries the Plasmodium parasite, which enters the human bloodstream during a bite.
  • Malaria cannot spread directly from person to person without a mosquito vector.

What is the approximate blood circulation rate in human capillaries in mm/sec?
A 0.1 mm/sec
B 1 mm/sec
C 10 mm/sec
D 100 mm/sec
Correct Answer: 1 mm/sec
Explanation:

  • Blood flows very slowly in capillaries to allow efficient exchange of oxygen, nutrients, and waste between blood and tissues.
  • This slow speed is essential for proper functioning of the body’s cells.

Which organelle is responsible for protein synthesis in a cell?
A Mitochondria
B Ribosome
C Golgi apparatus
D Lysosome
Correct Answer: Ribosome
Explanation:

  • Ribosomes are tiny cell structures that make proteins.
  • They read genetic instructions from RNA to assemble amino acids into proteins.
  • Ribosomes are found in both plant and animal cells, either free in the cytoplasm or attached to the endoplasmic reticulum.

Who discovered that malaria is transmitted by mosquitoes?
A Louis Pasteur
B Robert Koch
C Sir Ronald Ross
D Edward Jenner
Correct Answer: Sir Ronald Ross
Explanation:

  • Ronald Ross discovered that malaria is transmitted by mosquitoes in 1897.
  • He showed that the Anopheles mosquito carries the malaria parasite from person to person.
  • This discovery helped in controlling and preventing the spread of malaria.

What is the primary cause of deforestation?
A Climate change
B Urbanization and agriculture
C Natural disasters
D Wildlife activities
Correct Answer: Urbanization and agriculture
Explanation:

  • Urbanization is the process of people moving to cities and towns, leading to their growth.

It increases the demand for housing, roads, and infrastructure.

  • Agriculture is the practice of growing crops and raising animals for food and resources.

It often requires clearing land, which can impact forests and natural habitats.

Which of the following can be caused by global warming and climate change?
A Rising sea levels
B Extreme weather events
C Melting polar ice caps
D All of these
Correct Answer: All of these
Explanation:

  • Rising sea levels
  • Extreme weather events like floods, storms, and heatwaves
  • Melting glaciers and loss of biodiversity

These effects result from long-term changes in temperature and weather patterns.

What is the minimum distance between two points called in physics:
A Distance
B Speed
C Velocity
D Displacement
Correct Answer: Displacement
Explanation:

  • Displacement is the change in position of an object from its initial point to its final point.
  • It is a vector quantity, meaning it has both magnitude and direction.
  • Displacement shows the shortest straight-line distance between two points.

Which of the following terms is Not used in Physics?
A Acceleration
B Stock value
C Inertia
D Motion
Correct Answer: Stock value
Explanation:

  • Stock value is related to economics and finance, not physics.
  • Physics deals with matter, energy, motion, and forces.
  • Therefore, stock value is not a term used in physics.

Which solvent is commonly used in soft drinks?
A Water
B Acetone
C Ether
D Sodium
Correct Answer: Water
Explanation:

  • The solvent commonly used in soft drinks is water.
  • It dissolves sugar, flavors, and carbon dioxide in the drink.
  • Water makes up the largest portion of soft drinks.