Who invented the safety pin?

Related Mcqs:

1. Which Gas is included in Fry Chips Packets for safety?

   A. Nitrogen gas
   B. Carbon dioxide
   C. Oxygen
   D. Hydrogen

   Submitted by: Amir yamin

2. Battery was invented by__________?

   A. Nicolas Léonard Sadi Carnot
   B. Alessandro Volta
   C. Michael Faraday
   D. Friedrich Bessel

   Submitted by: Danish Balani

3. Who invented the first battery?

   A. Alessandro volta 
   B. Tim Berner
   C. Rob Stothard
   D. Georges Leclanche

   Submitted by: Ashfaque Ali Khoso

4. Who invented “Aspirin” in 1897?

   A. Barnard
   B. Newton
   C. Felix Hoffmann
   D. McLeod

   Submitted by: Asad Ullah Afridi

5. What inspired reflecting road lights to be invented?

   A. Car door reflecting mirrors
   B. The light a cat’s eyes gave off on a fence
   C. Sun light on steel posts on road sides
   D. The sun light on the windshield

   Submitted by: Rashid Mehmood

6. What “Enrico Fermi” invented?

   A. X ray machine
   B. Betatron
   C. Cyclotron
   D. Nuclear reactor

   Submitted by: Rashid Mehmood

7. Mass spectrograph was Invented by?

   A. Rutherford
   B. Chadwik
   C. F.W.Aston
   D. None of these

   Submitted by: Muhammad Mumtaz Haider

8. Who invented bifocal eyeglasses?

   A. Ibn-e-Haitem
   B. Benjamin Franklin
   C. Archemedes
   D. None

   Submitted by: Asifa Tariq

9. Who invented steamboat?

   A. James Watt
   B. Robert Fluton
   C. Frank Whittle
   D. George Stephenson

   Submitted by: Munwar Ali Sohu

10. Electric motor was invented by __________ ?

    A. Michael Faraday
    B. Oliver Evans
    C. Thomas Edison
    D. Horace Day

    Submitted by: Rashid Mehmood