21.
Elias Home invented
A
Steam boat
B
T.N.T
C
Sewing machine
D
None of these
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Elias Home invented
Steam boat
T.N.T
Sewing machine
None of these
Landstrom invented
Metallurgy
Gas Engine
Safety Match
None of these
Revolver discovered by
Colt
Mercafter
Bushwell
Daimler
Reaumur Thermometer was discovered by
Alexandar Graham Bell
Nicholas Copemicus
Andrius Celsius
R.A.F. de Reaumur
Who dicovered Printing Machine
John Guten Burg
Alexandar Graham Bell
Nicholas Copemicus
Leeuwen Hoek
Pneumatic tyre was invented by
Firestone
Dunlop
Stanes
None of these
Penicillin was invented by Fleming in the year
1842
1929
1945
1951
Neutron was discovered by
Marie Curie
Mendeleef
Rutherford
Chadwick
Who invented logarithms?
Mandeleef
Shockley
Amundson
John Napier
Lift was invented by
Otis
Domagk
Lee De Forest
None of these
Inert gases were discovered by
Dalton
Newton
Roentgen
Ramsay
Who discovered Human Body Formation
Andreas Vesalius
R.A.F. de Reaumur
Alexandar Fleming
Thomas Alva Edition
Homoeography was invented by
Cockrell
Lipman
Hahneman
none of these
Who discovered Helio-Centric Theory
Willbert Right-Arvili Right
Alexandar Fleming
J.J.Biard
Nicholas Copemicus
Helicopter was invented by
Drinker
Broquet
Copernicus
Cockrell
Thomas Alva Edison discovered
Gramophone
Telephone
Televison
Printing Machine
Fax machine was invented by
Daimler
Dewar
Bain
None of these
Fahrenheit Thermometer was discovered by
G.D. Fahrenheit
J.L.Baird
Alexandar Fleming
William Harvey
Evolution Theory was discovered by
Alexandar Fleming
Charles Darwin
William Harvey
Newton
Electrons were discovered by
Newton
Roentgen
J.J.Thompson
Edison