Chemical Engineering - Materials and Construction

6.
In cold working of metal as compared to its hot working
cracks and blow holes are eliminated.
ductility and impact strength improves.
appreciable strain hardening is produced.
yield stress, hardness and fatigue strength is not at all affected.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Nickel base alloys with __________ are known as monel metal.
zinc
tin
copper
molybdenum
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
Wrought iron is having very high
hardness.
strength.
corrosion resistance.
susceptibility to changes in its properties by heat treatment.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
When iron is rusted, it is
converted to a fine powder
reduced
oxidised
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Containers made of high silicon cast iron (14% Si) are not suitable for the storage of
acetic acid.
benzoic & boric acids.
phosphoric acid (95%) & sulphuric acid (95%).
hydrochloric acid (concentrated).
Answer: Option
Explanation:
No answer description is available. Let's discuss.