Showing posts from March, 2013Show all
Discuss the impact of technological and cultural factors on Social Change.
Is Sociology a Science? Discuss.
Discuss the changing role and functions of family.
Differentiate between Frenkel and Schottky defects?
Describe Fick's first law of diffusion. A plate of iron is exposed to a carburizing atmosphere on one side and a decarburizing atmosphere on the other side at 700 degree C. Under steady state condition calculate the diffusion flux of carbon through the plate, if the concentration of carbon at position of 5 mm and 10 mm beneath the carburizing surface are 1.2 kg/m3 and 0.8 kg/m3, respectively. Assume a diffusion coefficient of 3 * 1011 m2/s at this temperature.
Mention different types of Bravais lattices possible in crystalline materials. Show that the atomic packing factor (APF) of FCC crystal structure is 0.74.