41. An electrolytic refining cell for copper consists of an alloy with activity of copper acu = 0.8 as the anode, and pure copper as the cathode. What is the absolute value of the cell potential (in millivolts) at 25°C, given that copper is divalent? Faraday constant is 96500 C/mol and the universal gas constant is 8.314 J/(mol.K).
42. The percentage of ferrite and pearlite in annealed 0.5% carbon steel is approximately
43. Total Magnification is obtained by . . . . . . . .
44. Match the particle morphologies in Group 1 with the powder production methods in Group 2.
Group-1
Group-2
P. Superalloy powder with rounded morphology
1. Carbonyl process
Q. Monosieed spherical Ta powder
2. Gas atomisation
R. Fe powder with onion peel structure
3. Oxide reduction
S. Irregularly shaped W powder
4. Rotating electrode process
| Group-1 | Group-2 |
| P. Superalloy powder with rounded morphology | 1. Carbonyl process |
| Q. Monosieed spherical Ta powder | 2. Gas atomisation |
| R. Fe powder with onion peel structure | 3. Oxide reduction |
| S. Irregularly shaped W powder | 4. Rotating electrode process |
45. Match the processes in Group I with the objectives in Group II.
Group I
Group II
P. Vacuum Arc Degassing (VAD)
1. Primary iron making
Q. LD
2. secondary steel making
R. COREX
3. Direct smelting
S. Blast Furnace
4. Primary steel making
| Group I | Group II |
| P. Vacuum Arc Degassing (VAD) | 1. Primary iron making |
| Q. LD | 2. secondary steel making |
| R. COREX | 3. Direct smelting |
| S. Blast Furnace | 4. Primary steel making |