Physics
Tungsten is used for the manufacture of the filament of an electric bulb, because

It has a very high melting point
It is malleable
It is economical
It is a good conductor

ANSWER DOWNLOAD EXAMIANS APP

Physics
Scalar Quantities are

Physical quantities which have magnitude only and no direction
Physical quantities which have no magnitude only and only direction
Physical quantities which have magnitude only and direction
Physical quantities which have no magnitude and no direction

ANSWER DOWNLOAD EXAMIANS APP