General knowledge Material- all Competitive

In which decade were the first successful diode and triode vacuum tubes invented?
  1. 1800s
  2. 1880s
  3. 1890s
  4. 1900s
What office item was invented by Bette Nesmith Graham in 1951?
  1. Fax machine
  2. Stapler
  3. Liquid Paper
  4. Copy machine
Who invented the phonograph?
  1. Thomas Edison
  2. John Kruesi
  3. Jules Levy
  4. Alexander Graham Bell
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
  1. Telegraph
  2. Radio
  3. Television
  4. Dishwasher
What piece of clothing was invented by French fashion designer Louis Reard in 1946?
  1. Zoot suit
  2. Mini-skirt
  3. Bikini
  4. Tank top
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP