Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 24
| 1. |
The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag. |
| A. |
fluidity | | B. |
basicity | | C. |
acidity | | D. |
viscosity |
Answer: Option A
Explanation:
|
| 2. |
The thermodynamic law, PVy = constant, is not followed by the |
| A. |
free expansion of an ideal gas. | | B. |
adiabatic expansion of steam in turbine. | | C. |
adiabatic compression of air. | | D. |
ideal compression of air. |
Answer: Option A
Explanation:
|
| 3. |
Pick out the wrong statement about the machinability of metals. Machinability of a metal |
| A. |
decreases with increase in strain hardening tendencies. | | B. |
decreases with increase in hardness, in general. | | C. |
depends on the composition, microstructure and physical & mechanical properties. | | D. |
decreases with increases in tensile strength & decrease in grain size. |
Answer: Option D
Explanation:
|
| 4. |
The refrigerant freon-12 is chemically |
Answer: Option A
Explanation:
|
| 5. |
Which of the following phenomenon will exhibit the minimum heat transfer? |
| A. |
Boiling. | | B. |
Forced convection in air. | | C. |
Free convection in air. | | D. |
Conduction in air. |
Answer: Option D
Explanation:
|
