Science

The Indian scientist who put forward the theory of thermal ionization was
Meghanath Saha

The sound waves which can not heard by a human ear are called
Infrasonic and Ultra sonic sounds

Why is Tungsten used for the manufacture of the filament of an electric bulb?
Because it has a very high melting point

Newton’s Law of gravitation apples to
Both small and big bodies

The direction of the conventional current in a diode is
Plate to Cathode

The light of which colour has the longest wavelength?
Red

Which is the unit to measure supersonic speed?
Mac

Which is the unit of force?
Newton

How is energy produced in the sun?
By nuclear fusion

Which is the element without neutron?
Hydrogen