Q1. ‘Electric Battery’ was invented by __ and he was from
Correct Answer: D
Alessandro Volta invented the first true electric battery (Voltaic Pile) in 1800. He was an Italian physicist and the unit of electric potential (volt) is named after him.
Q2. Who discovered hydrogen?
Correct Answer: A
Henry Cavendish discovered hydrogen in 1766. He identified it as a distinct element and called it inflammable air.
Q3. Which element is the first element in the periodic table?
Correct Answer: C
Hydrogen is the first element in the periodic table with atomic number 1.
Q4. Who invented the first ever safety elevator?
Correct Answer: B
Elisha Otis invented the first safety elevator in 1853 with a safety brake system.
Q5. What did Lewis Waterman invent?
Correct Answer: D
Lewis Waterman invented the first practical fountain pen in 1884.
Q6. The metal used for making the nib of a fountain pen is __
Correct Answer: C
Osmium is used due to its hardness and durability.
Q7. Insulin was discovered by:
Correct Answer: A
Frederick Banting discovered insulin in 1921.
Q8. Insulin is used to treat:
Correct Answer: C
Insulin helps regulate blood glucose levels.
Q9. Frederick Banting belonged from which country?
Correct Answer: D
Frederick Banting was Canadian.
Q10. Who among the following discovered Radioactivity?
