1.  First mechanical calculator was built in 1642 by

a

  Stephen Hales

b

 Blaise Pascal

c

 Gerardus Mercator

d

 Thomas Newcomen

Answer & Explanation
Answer : Option B

2.  Radio valve was invented by

a

  Adolph Rickenbacker

b

 Dr. Wallace H. Carothers

c

 Christopher Cockerell

d

 David Brewster

Answer & Explanation
Answer : Option B

3.  The system for writing by blind people was invented by

a

  Dr. Charles H. Townes

b

 Louis Braille

c

 Henry Bacquerel

d

 Sir J. A. Fleming

Answer & Explanation
Answer : Option B

4.  In which decade was the telephone invented?

a

  1870

b

 1880

c

 1860

d

 1850

Answer & Explanation
Answer : Option A

5.  The velocity of light was first measured by

a

  Romer

b

 Einstein

c

 Newton

d

 Galileo

Answer & Explanation
Answer : Option A

6.  Which famous inventor ranks second in the number of patents registered?

a

  Edwin Land

b

 Thomas Alva Edison

c

 James Watt

d

 Albert Einstein

Answer & Explanation
Answer : Option A

7.  Ernest Rutherford invented what?

a

  Electron

b

 Newtron

c

 Proton

d

 None of these

Answer & Explanation
Answer : Option C

8.  What item of apparel was invented by Ellery Chun, a Hawaiian clothing merchant, in 1931?

a

  String bikini

b

 Muumuu

c

 Aloha shirt

d

 Capri pants

Answer & Explanation
Answer : Option C

9.  Who invented fuel cells in 1839?

a

  Buckminster Fuller

b

 Sir William Grove

c

 Sylvester Graham

d

 Joyce Hall

Answer & Explanation
Answer : Option B

10.  Who invented Bicycle?

a

  Kirkpatrick Macmillan

b

 Evangelista Torricelli

c

 Karl Benz

d

 Leo H Baekeland

Answer & Explanation
Answer : Option A

11.  Neutron was discovered by

a

  Chadwick

b

 Marie Curie

c

 Mendeleef

d

 Rutherford

Answer & Explanation
Answer : Option A

12.  Who invented the first controllable flying AEROPLANE (AIRPLANE)?

a

  Wright Brothers

b

 Lidenbergh Brothers

c

 South Brothers

d

 West Brothers

Answer & Explanation
Answer : Option A

13.  This English inventor is known as the 'Father of Computing.'

a

  Philo Farnsworth

b

 J. Presper Eckert

c

 John Mauchly

d

 Charles Babbage

Answer & Explanation
Answer : Option D

14.  Who invented Fountain Pen?

a

  John J. Loud

b

 Sir Frank Whittle

c

 Lewis(E) Waterman

d

 Kirkpatrick Macmillan

Answer & Explanation
Answer : Option C

15.  For what does the world owe Almon Strowger a debt of gratitude?

a

  Parking Meters

b

 Vending Machines

c

 Automatic Telephone Exchanges

d

 Traffic Lights

Answer & Explanation
Answer : Option C
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