1. Who invented paper ?

Answer:

Cai Lun

2. Who invented Transformer ?

Answer:

Ottó Bláthy

3. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

4. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

5. Who invented Automatic rifle ?

Answer: John Browning of U.S.A. in 1918.

6. Who invented Nylon ?

Answer:

Wallace Carothers

7. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin