The two surfaces of a 5 mm thick plate of carbon steel are maintained at a carbon concentration of 10⁴ mol. m^-3 on one side and zero concentration on the other side. Taking the diffusion coefficient of carbon in austenite to be 10^-11 m^-2.s^-1, the steady state flux (mol.m^-3.s^-1) through the thickness of the steel is

The extending the polymer chain by successive addition of monomers units is called

A. Propagation

B. Termination

C. Both A and B

D. None of these

Dacron is an example of

A. polyamides

B. polypropene's

C. polyacrylnitrfle

D. polyesters

If Reynolds number is greater than 1, then the

A. Viscous force is larger than the inertia force

B. inertia force is larger than the viscous force

C. inertia force is larger than the surface tension force

D. inertia force is larger than the gravitational force

Which is the correct (degree) temperature range for spherodized carbide in low carbon steel

A. 750-950°C

B. 950-1150°C

C. 550-750°C

D. None of these