General Knowledge Science Questions and Answers

In this video Faisal Nadeem shared 15 most important general knowledge science questions and answers or science gk questions and answers
or general science test preparation or general knowledge quiz or general knowledge questions and answers or general knowledge mcqs by @KnowledgeTopper

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Q1) What is the chemical symbol of water?
Answer: H₂O

Q2) Which gas do plants absorb from the atmosphere?
Answer: Carbon dioxide (CO₂)

Q3) What planet is known as the Red Planet?
Answer: Mars

Q4) What is the boiling point of water in Celsius?
Answer: 100°C

Q5) What is the main gas in the Earth's atmosphere?
Answer: Nitrogen

Q6) Which part of the cell contains genetic material?
Answer: Nucleus

Q7) What is the largest organ in the human body?
Answer: Skin

Q8) What type of energy is stored in a battery?
Answer: Chemical energy

Q9) What gas do humans need to breathe to survive?
Answer: Oxygen (O₂)

Q10) What force pulls objects toward the Earth?
Answer: Gravity

Q11) What is the center of an atom called?
Answer: Nucleus

Q12) Which vitamin is produced when sunlight hits the skin?
Answer: Vitamin D

Q13) What is the hardest natural substance on Earth?
Answer: Diamond

Q14) Which planet is closest to the Sun?
Answer: Mercury

Q15) How many bones are there in the adult human body?
Answer: 206

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