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: Boiling point of pure water at sea level is
A) 100°C
B) 120°C
C) 90°C
D) 80°C
✅ Correct Answer: A
Explanation: Boiling point of water at sea level is 100°C due to standard atmospheric pressure.
Q: Planet known as the Red Planet
A) Venus
B) Saturn
C) Mars
D) Jupiter
✅ Correct Answer: C
Explanation: Mars is called the Red Planet because of its reddish surface due to iron oxide.
Q: Largest organ in the human body
A) Liver
B) Heart
C) Skin
D) Brain
✅ Correct Answer: C
Explanation: Skin is the largest organ, providing a protective outer layer for the body.
Q: Chemical symbol for Sodium
A) S
B) So
C) Na
D) Sn
✅ Correct Answer: C
Explanation: The symbol 'Na' is derived from the Latin word 'Natrium' for Sodium.
Q: Basic unit of heredity
A) Chromosome
B) DNA
C) Nucleus
D) Gene
✅ Correct Answer: D
Explanation: Gene is the hereditary unit located on chromosomes.