Everyday Science MCQs
Everyday Science MCQs test your understanding of basic scientific concepts applied in daily life. This section includes questions from physics, chemistry, biology, and scientific phenomena relevant to everyday experiences. Topics include inventions, discoveries, environmental science, energy, human body, and more. These MCQs are widely asked in competitive exams like CSS, PMS, PPSC, FPSC, and NTS. Our curated question bank is structured to make learning easy and effective, with correct answers and topic-wise breakdowns. Practicing these MCQs helps in developing a scientific mindset and improves accuracy in science-based general knowledge sections of job tests. It's an essential subject for scoring high in the general paper.
Q: The human blood is red due to the presence of
A) Myoglobin
B) Hemoglobin
C) Plasma
D) Chlorophyll
✅ Correct Answer: B
Explanation: Hemoglobin binds with oxygen and gives red color to blood.
Q: The basic unit of computer memory is
A) Byte
B) Chip
C) Hertz
D) Bit
✅ Correct Answer: D
Explanation: Bit is the smallest unit of data in computing.
Q: The function of white blood cells is to
A) Clot blood
B) Digest food
C) Fight infections
D) Transport oxygen
✅ Correct Answer: C
Explanation: WBCs are part of the immune system fighting pathogens.
Q: Nuclear energy is released from
A) Atomic explosion
B) Lightning
C) Fission or fusion
D) Chemical reaction
✅ Correct Answer: C
Explanation: Fission and fusion are nuclear processes that release energy.
Q: The part of the ear that receives sound vibrations is
A) Eustachian tube
B) Cochlea
C) Pinna
D) Drum
✅ Correct Answer: D
Explanation: The eardrum vibrates in response to sound waves.
Q: The natural fiber obtained from plants is
A) Cotton
B) Nylon
C) Rayon
D) Polyester
✅ Correct Answer: A
Explanation: Cotton is a plant-based natural fiber.
Q: The process of removing salt from seawater is known as
A) Distillation
B) Filtration
C) Desalination
D) Purification
✅ Correct Answer: C
Explanation: Desalination removes salt to make seawater drinkable.
Q: The motion of the Earth around the Sun is called
A) Reflection
B) Oscillation
C) Revolution
D) Rotation
✅ Correct Answer: C
Explanation: Revolution is Earth’s yearly orbit around the Sun.
Q: The chemical element found in all organic compounds is
A) Nitrogen
B) Hydrogen
C) Carbon
D) Oxygen
✅ Correct Answer: C
Explanation: Carbon forms the backbone of all organic molecules.
Q: Lightning is a form of
A) Sound wave
B) Thermal energy
C) Static electricity
D) Nuclear energy
✅ Correct Answer: C
Explanation: Lightning is caused by buildup and discharge of static electricity.