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: Organ responsible for pumping blood
A) Liver
B) Lungs
C) Brain
D) Heart
โœ… Correct Answer: D
Explanation: Heart continuously pumps blood throughout the body via blood vessels.
Q: Body part mainly responsible for balance
A) Arms
B) Legs
C) Eyes
D) Ears
โœ… Correct Answer: D
Explanation: The inner ear contains the vestibular system that maintains body balance.
Q: Process through which plants make food
A) Photosynthesis
B) Germination
C) Respiration
D) Digestion
โœ… Correct Answer: A
Explanation: Photosynthesis is the process by which plants synthesize food using sunlight.
Q: First element in the periodic table
A) Oxygen
B) Helium
C) Hydrogen
D) Lithium
โœ… Correct Answer: C
Explanation: Hydrogen is the lightest and first element in the periodic table.
Q: Gas used by plants during photosynthesis
A) Nitrogen
B) Carbon dioxide
C) Oxygen
D) Hydrogen
โœ… Correct Answer: B
Explanation: Carbon dioxide is absorbed by plants to produce glucose in photosynthesis.