Science MCQs
Science MCQs cover physics, chemistry, and biology basics, ideal for SSC, HSSC, and job exams. They enhance understanding of scientific concepts, laws, anatomy, and problem-solving skills essential for competitive and academic success.
Q: Instrument used to detect earthquakes
A) Speedometer
B) Seismograph
C) Barometer
D) Thermometer
✅ Correct Answer: B
Explanation: A seismograph records seismic waves produced by earthquakes.
Q: Common salt’s chemical formula
A) CaCl₂
B) NaCl
C) NaCO₃
D) KCl
✅ Correct Answer: B
Explanation: NaCl represents sodium chloride, commonly known as table salt.
Q: Plant tissue responsible for food transport
A) Epidermis
B) Phloem
C) Cambium
D) Xylem
✅ Correct Answer: B
Explanation: Phloem distributes the food made during photosynthesis to plant parts.
Q: Smallest bone in human body
A) Stapes
B) Femur
C) Tibia
D) Radius
✅ Correct Answer: A
Explanation: The stapes bone in the middle ear is the smallest bone in the human body.
Q: Total number of teeth in adult humans
A) 30
B) 36
C) 28
D) 32
✅ Correct Answer: D
Explanation: Adult humans typically have 32 permanent teeth.