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Question 1 :-

Diffraction effect is .......?

More for a round edge

Less for a round edge

More for a sharp edge

Less for a cylindrical edge

Question 2 :-

We get light inside a room in a daytime due to ....?

Interfrerence

Polarisation

Refraction

Diffraction

Question 3 :-

Who built the first electron microscope?

H.Binning

Rovert Milliken

Max Knoll and

James Van Allen Erns Ruska

Question 4 :-

Who first detected radio waves coming from space?

Fritz Zwicky

OleRoamer

Kari G. Janky

Lord Kelvin

Question 5 :-

Who led the first marine expedition to travel aroundt he Earth?

Marco Polo

Nicholas of Cusa

Ferdinand Megellan

Ptolemy

Question 6 :-

Who developed the first movie Camera?

Gaumont

Chales Pathe

Jacques Daguerre

Baron

Question 7 :-

Who among the following gave the concept of  the first integrated circuit?

John Napier

Jack S. Killy

George Stibiz

Willhelm Schickard

Question 8 :-

Th Life span of Red Blood Cells ..........Days?

60

120

180

240

Question 9 :-

Who was the first to determine the size of the earth correctly

Pythagoras

Archimedes

Ptolemy

Eratosthenes

Question 10 :-

Can you name the inventor of the  Safety Pin?

Walter Hunt

A. Rose

Charles Goodyear

Stewart

Question 11 :-

Can you name the inventor of  the  Synthitic dyes?

Karl Graebe

Ernest Solvay

Frits Haber

William Perkins

Question 12 :-

who invented the fountain pen?

Elias Howe

Waterman

William Thomas

Hipparchus

Question 13 :-

Who is the inverntor of the Refrigerator?

James Harrison

John Brattain

Nicoa Tesla

Jack Kilby

Question 14 :-

Who invented the Electric Fan?

Willam Thosam

Wheeler

Jules verne

Elias Howe

Question 15 :-

Who invented the Aeroplane?

Orville Wright and Wll bur Wright

Frank Whittle

Otto Lillienthal

Vannevar bush

Question 16 :-

Who invented Ballon?

JulesVerne

Montgolfier

Karl Graebe

John Larson

Question 17 :-

Who invented the Knitting Machine?

Georeg Stephenson

Eli Whitney

Walter Hunt

William Lee

Question 18 :-

Which Scientist invented the Mercury Thermometer?

Gabriel Fahrenhiet

Hentry Gessemer

Robert Fulton

Samuel Crompton

Question 19 :-

Who invented the method of manufacturing steel from iron?

Charles Ginsberg

Sir William Cook

William Stanley

Al-Kashi

Question 20 :-

Who was the inventor of the Thermos Flask?

Oliver Lodge

James Dewar

Eugen Goldstein Gallo

Denis Pepin

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