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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 15
26.
Wood is a/an __________ material.
amorphous
cellular
homogeneous
grannular
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Pick out the wrong statement.
Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties.
Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness.
Induction hardening and flame hardening techniques are also used for surface hardening.
Martempering of a material is a hardening process.
Answer: Option
Explanation:
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28.
Use of flux during soldering is done to
increase flidity of solder by lowering its melting temperature.
prevent oxide formation.
wash away surplus solder.
full up the joint gap.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The most important consideration in value engineering is the
profit maximisation.
customer satisfaction.
cost reduction.
process improvement.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Resilience of a bolt can be increased by increasing its
length
shank diameter
head diameter
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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