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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 1
21.
Powder metallurgy process does not make metal powder by
atomisation
grinding/milling
hammering
electrolytic deposition
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
Increases the reducing potential of the gas.
Increases the flame temperature.
No significant change occurs.
Increases the hydrogen content in the metal.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Pick out the wrong statement.
A ferromagnetic material becomes paramagnetic above the 'Curie temperature'.
Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials.
Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces.
Tungsten steel and alnico are not hard magnetic materials.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
60 - 100
400 - 700
1200 -1500
2000 - 2300
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Maximum permissible air velocity in pipelines is about __________ metre/second.
5
10
20
40
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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