Everyday Science MCQs
Everyday Science MCQs cover physics, chemistry, biology, inventions, environment, and human body basics. Ideal for CSS, PMS, PPSC, FPSC, and NTS exams, they boost scientific awareness and accuracy in general knowledge sections.
Q: Common salt used in food is chemically known as
A) Potassium nitrate
B) Sodium oxide
C) Calcium carbonate
D) Sodium chloride
✅ Correct Answer: D
Explanation: Sodium chloride is the scientific name for table salt.
Q: The energy transformation in an electric fan is
A) Electrical to heat
B) Heat to mechanical
C) Electrical to mechanical
D) Mechanical to sound
✅ Correct Answer: C
Explanation: Electrical energy is converted to mechanical motion.
Q: The metal commonly used in electrical wiring is
A) Iron
B) Copper
C) Aluminium
D) Zinc
✅ Correct Answer: B
Explanation: Copper is widely used due to its high conductivity.
Q: The device that converts sound energy into electrical signals is called
A) Resistor
B) Microphone
C) Speaker
D) Amplifier
✅ Correct Answer: B
Explanation: Microphone converts sound waves into electrical signals.
Q: Boiling point of water at sea level is
A) 90°C
B) 120°C
C) 100°C
D) 110°C
✅ Correct Answer: C
Explanation: At standard pressure, water boils at 100°C.