Science MCQs
Science MCQs offer a general overview of multiple scientific disciplines such as physics, chemistry, and biology. These questions are ideal for students, job seekers, and competitive exam candidates looking to enhance their scientific knowledge. Whether you're preparing for SSC, HSSC, or general job tests, these MCQs provide a mix of theoretical and practical science questions. This category is particularly useful for testing concepts related to laws of motion, periodic table, cell structure, human anatomy, electricity, and more. The MCQs are curated to support concept building and revision. They also help in developing problem-solving abilities and logical analysis skills, which are crucial in science-based exams.
Q: Substance that speeds up chemical reactions
A) Mineral
B) Hormone
C) Enzyme
D) Vitamin
✅ Correct Answer: C
Explanation: Enzymes act as biological catalysts that speed up reactions.
Q: Common symptom of iron deficiency
A) Anemia
B) Rash
C) Swelling
D) Fever
✅ Correct Answer: A
Explanation: Anemia occurs due to insufficient iron required for red blood cell production.
Q: Device converting sound into electrical signals
A) Speaker
B) Camera
C) Microphone
D) Motor
✅ Correct Answer: C
Explanation: A microphone captures sound and converts it into electrical signals.
Q: Material attracted by magnets
A) Plastic
B) Copper
C) Iron
D) Wood
✅ Correct Answer: C
Explanation: Iron is strongly attracted to magnets due to its magnetic properties.
Q: Number of chambers in a human heart
A) Four
B) Three
C) Two
D) Five
✅ Correct Answer: A
Explanation: The human heart has four chambers: two atria and two ventricles.
Q: Instrument used to observe stars
A) Telescope
B) Periscope
C) Stethoscope
D) Microscope
✅ Correct Answer: A
Explanation: A telescope magnifies distant objects like stars and planets.
Q: Blood type known as universal donor
A) O–
B) B–
C) A+
D) AB+
✅ Correct Answer: A
Explanation: O negative blood can be given to patients of any blood group.
Q: Plant tissue transporting water
A) Cambium
B) Cortex
C) Phloem
D) Xylem
✅ Correct Answer: D
Explanation: Xylem conducts water and minerals from roots to the rest of the plant.
Q: Virus responsible for COVID-19
A) Influenza
B) SARS-CoV
C) SARS-CoV-2
D) HIV
✅ Correct Answer: C
Explanation: SARS-CoV-2 is the virus that causes the COVID-19 illness.
Q: Force that opposes motion
A) Gravity
B) Friction
C) Inertia
D) Magnetism
✅ Correct Answer: B
Explanation: Friction is the resistance to motion when two objects rub together.