Science For You

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Science

Which device is used to escape at the time of a plane accident?
Parachute

What is the length of “ nautical mile?
About 2025 yards, 1852 metres

Which is the device that changes light energy into electric energy?
Photo electric cell

What is absolute zero (The temperature at which the atom of a matter becomes still)?
-273degree centigrade or 0 degree K

Which thermometer is used to fine continuous changes in temperature?
Thermo electric thermometer

What is the most important advantages of sodium vapour lamp?
It requires less electricity

When heated, a material attaining gaseous state directly from solid state. Which is the freezing point of a liquid?
Cryoscope

Why does a straight stick seem to be curved in water?
Because of diffraction

It is the characteristic of liquid drops to be in spherical shapes. What is its reason?
Surface tension

Which is the glass that darkness in sunlight and lightens in darkness?
Photo chronic glass

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Science

When we see movie how many pictures are falling on the screen in a second?
24-39 pictures

Which instrument is used for measuring variations in the gravitational field in different parts of the earth?
Gravimeter

Which instrument is used for measuring the humidity of air?
Hydrometer

Who made the first ever parachute jump?
Jaqres Garnerin, in 1797

What is the law contained in the working of rockets?
Newton’s Third Law of Motion

What is the scientific name of “Photostat”?
Xerography

Who invented Xerography?
C.F.Carrison

Is melting if ice, a chemical change or physical can not be changed into liquid form?
Ideal gases

Pascal is the unit of what?
Pressure

Who started the publication of “Indian Journel of Physics?
C.V Raman

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Science

Name the Scientist who launched rocket for the first time on experimental basis?
Robert H Godard

At which temperature does water have the maximum density?
4 degree centigrade

If blue light and yellow light are mixed on a screen what will be the resultant colour?
Green

Which alloy is used to bore rock?
Manganese steel

Which instrument is used to detect the presence of electric charge?
Electroscope

What is the use of Planimeter?
For mechanically measuring the are of a plane figure

What is the name of the sound having frequency more than 30000 hertz?
Supersonic

Who was the first to develop battery which produce electric charge?
Alexandro Volta

Which is the device used for testing the concentration of sugar in a solution?
Saccharimeter

Albert Einstein got Nobel prize in 1921for Physics on a treatise Which was the subject?
Photoelectric effect

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Science

Which is the metal through which X-ray does not pass?
Lead

Which is the vtamin produced in our body by ultra violet rays in the sun?
VitaminD

Which is the unit for measuring the intensity of sound wave?
Decibel

Which scientific principle has been used in the brakes of vehicles?
Friction

What is the basic principle behind submarines?
Principles of buoyancy of Archimedes

Which device is used in atomic reactors to increase the velocity of ions?
Cyclotron

Who invented Cyclotron?
E.O.Lawrence

Sound is not heard in the moon. Why?
There is no atmosphere in the moon

In the German Silver (an alloy) how much silver is present?
Zero percentage

9What is the use “anemometer”?
It is used for measuring the speed of airflow


Why is there a loud explosion when electric bulb bursts?
Because air rushes suddenly into the vacuum space of the bulb

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Science

Who constructed the first telescope?
Galileo

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

Who treated “zero” as number and showed its mathematical operations first time?
Brahmagupta

Who first showed that anything divided by zero in infinity?
Bhaskaracharya

Who was the first scientist to use computer language for his computer?
Konrad Zuse

Which was the first recognized computer language?
Plankalkuel

Which is the first computer that appeared to have intelligence?
Eliza

Who was the first to use the term ‘bit’ in the reference of computers?
John Turkey

Who invented Logarithm?
John Napier

Which mathematician discovered the philosophy of infinity?
Zero

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Science

Besides Sir Isaac Newton, who independently discovered calculus?
G.W.Leibniz

Who was known as the father of Computer Aided Design or CAD?
I.E. Sutherland

Who is known as father of modern mathematics?
Rene Descartes

Who is called father of modern computer?
Charles Babbage

Who is believed to be the father of Set Theory?
George Cantor

Who built the first Analogue Computer?
Lord Kelvin

What is known as ‘brain’ of computer?
Central Processing Unit – CPU

Who developed the first digital computer?
H.H. Aiken

Which is the latest material used for manufacturing a computer chip?
Gallium Arsenide

Who built the UNIVAC series of commercial application?
John Mauchly and J.P . Eckert

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Which is the temporary memory of the computer?
RAM

Who developed the computer language LOGO?
Seymor Papert

FORTRAN, a computer programme language is mainly used for
Scientific research

The element Fermium is named after?
Enrico Fermi

The most widely used commercial programming computer language?
COBOL

Who is believed to be the first computer programmer/
Augusta Ada

Who forwarded the concept of ‘stored programme’ in computer science?
John Von Neumann

Who invented ‘Punch cards’?
Herman Hollerith

In computers which is the minimum error code?
Gray code

A set of date is known as
Field