Discoveries & Inventions

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46 An anemometer measures which of the following ?

A
Speed of light
B
Speed of wind
C
Speed of water current
D
Speed of satellites

47  What invention caused many deaths while testing it?

A
Dynamite
B
Ladders
C
Race cars
D
Parachute

48 What J. B. Dunlop invented?

A
Pneumatic rubber tire
B
Automobile wheel rim
C
Rubber boot
D
Model airplanes

49 Who produced the first automobile ?

A
Gottleib Daimler
B
Henry Ford
C
Rudolf Diesel
D
Karl Benz

50 Who developed the first automatic automobile ?

A
Goatleab Daimler
B
Henry Ford
C
Rudolf Diesel
D
Karl Benz

51 Who discovered North Pole ?

A
Amundson
B
(2)Robert Peary
C
John Cobot
D
Captain Cook

52 Who invented Portland Cement?

A
Leonardo da Vinci
B
Denis Gason
C
Joseph Aspdin
D
Percy L. Spencer

53 Who discovered North Pole ?

A
Robert Peary
B
Amundsen
C
Tasman
D
John Cabot

54 Who was the first person to patent the JET ENGINE?

A
F. Whittle
B
C. Lindbergh
C
W. Histell
D
B. Owings

55 Who invented the mobile phone?

A
Joseph Wilson
B
Edwin Land
C
Martin Cooper
D
John Lloyd Wright

56 X-Rays, which are now used on a day to day basis for diagnosis in medicine, was discovered by?

A
Wilhelm Rontgen
B
Niels Bohr
C
Ernest Rutherford
D
Max Bon

57 Gas engine was invented by:

A
Charles
B
Davy
C
Daimler
D
Diesel

58 Reserve transcription was discovered by :

A
Beadle & Tatum
B
Waston & Crick
C
Temin & Baltimore
D
har Govind Khorana

59 Immunization technique was developed by which of the following:

A
Joseph Lister
B
Louis Pasteur
C
Edward Jenner
D
Robert Koch

60 Crescograph was invented by which of the following:

A
S.N. Bose
B
P.C. Roy
C
J.C. Bose
D
P.C. Mahalanobis