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:
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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:
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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:
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4. |
The refrigerant freon-12 is chemically |
Answer: Option A
Explanation:
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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:
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