Match the List-I with List-II
| List-I | List-II | ||
|---|---|---|---|
| Inventions | Inventor | ||
| A. | Barometer | I. | Carl Wilhelm Scheele |
| B. | Ball Point Pen | II. | Enrico Fermi |
| C. | Chlorine | III. | Evangelista Torricelli |
| D. | Nuclear Energy | IV. | Laszlo Biro |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-III, B-IV, C-I, D-II
(A) Barometer — this matches (III) Evangelista Torricelli. The Italian scientist made the first mercury barometer in 1643 to measure air pressure.
(B) Ball Point Pen — this matches (IV) Laszlo Biro. The Hungarian journalist patented the ballpoint pen in 1938; in many countries a ballpoint is still called a “biro”.
(C) Chlorine — this matches (I) Carl Wilhelm Scheele. The Swedish chemist discovered chlorine in 1774 (it was named an element later by Humphry Davy).
(D) Nuclear Energy — this matches (II) Enrico Fermi. The Italian-American physicist built the first nuclear reactor, Chicago Pile-1, which ran the first controlled nuclear chain reaction in 1942.