| 1 |
What product invented by William shockley John Bardeen and walter Brattain at Bell Labs in 1947 revolutionized the electronics industry?
|
Vacuum tube<br>
Transistor <br>
integrated circuit <br>
Silicon <br>
|
| 2 |
In which year did Mikhail Kalashnikov develop AK-47( Kalashinkov Gun?)
|
1947
1944
1939
1943
|
| 3 |
In 1945, Percy Spencer stumbled on the principle of a kitchen gadget buy carrying chocolate into a radiation lab, he also ruined a perfect suit, name the product.
|
Microwave oven <br>
Electric oven <br>
Juicer, Mixer and Grinder <br>
Toaster <br>
|
| 4 |
Who invented typewrite?
|
Dalton <br>
Pascal <br>
Sholes <br>
Waterman <br>
|
| 5 |
First photocopier was made in 1938, who invented it?
|
Arthur Korn <br>
Chestor Carison <br>
Philo Fransworth <br>
Georg Biro <br>
|
| 6 |
Who discovered the smallpox vaccine:
|
Joseph Lister <br>
Alexandr Fleming <br>
Louis Pasteur <br>
Edward Jenner<br>
|
| 7 |
DDT, when invented in 1939, was hailed as the ultimate insecticide, only to be withdrawn in the US in 1972 due to its adverse impact on environment, Who invented it?
|
George Biro <br>
LH Baekeland <br>
Charles Drew <br>
Paul Muller<br>
|
| 8 |
According to lgor Sikorsky , he just added an engine to a Leonard da Vinci Design. What did he invent in 1939?
|
Jet Plane <br>
Submarine <br>
Hovercraft <br>
Helicopter <br>
|
| 9 |
Laszlo and geog Biro invented which place of writing instrument in 1938?
|
Ballpoint Pen <br>
Jet plane <br>
Hovercraft <br>
Fountain Pen <br>
|
| 10 |
Maria Montessori developed a system in 1970 which later on became a global stander. what?
|
Montessori System of per-schooling <br>
Blood-Plasma Storage system<br>
Data and text Transfer system across computer networks<br>
Colour TV transmission system<br>
|
.gif)
Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
