-
- Telephone
- Penicillin
- Streptomycin
- X-Ray
Sciences MCQs
Neutron was discovered by _____.
-
- Chadwick
- Moseley
- Rutherford
- Thomson
Who among the following described protoplasm as the physical basis of life?
-
- J.C. Bose
- Leeuwenhoek
- T.H. Huxley
- Rudolf Virchow
Though the first photocopies was made in 1938, its commercial production started only in 1960s. Who invented it?
-
- Georg Biro
- Arthur Korn
- Philo Farnsworth
- Chester Carlson
Sony’s ch-chairman Akio Morita wanted to listen to music while he played golf. So, Sony developed:
-
- Discman
- Walkman
- Two-in-ones
- Portable Stereo System
Which two companies developed compact disc independently in 1979?
-
- Sony and Matsuhisa
- Philips and General Electric
- Sony and Philips
- Mitsubishi and Sony
The invention of which product by Robert Noyce in 1959 made the electronic equipments shrink in size?
-
- Integrated circuit
- Silicon
- Transistors
- Vacuum tubes
Though Mitsubishi built the VCR market from 1969 onwards with its VHS standard, it was actually some other company which made the first video-recorder. Name it.
-
- Sanyo
- Sony
- Ampex
- General Electric
What product invented by William Shockley, John Bardeen and Walter Brattain at Bell Labs in 1947 revolutionized the electronics industry?
-
- Silicon
- Integrated circuit
- Vacuum tube
- Transistor
In which year did Mikhail Kalashnikov develop AK-47?
-
- 1936
- 1947
- 1960
- 1971