Chemical Engineering - Chemical Engineering Basics

1.
Stainless steel is welded with difficulty because of
its high melting temperature.
chances of cracking.
oxide film formation.
chromium carbide formation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
For preparation of porous bearings by powder metallurgy, preferred particle shape is
spherical
nodular
irregular
no preferred shape
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.
0.5
3
10
25
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
High speed steel tools retain their hardness upto a temperature of __________ °C.
500
750
900
1100
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
Wrought iron does not have
uniform strength in all directions.
ability to hold protective coating.
high ductility & corrosion resistance.
easily weldable characteristics.
Answer: Option
Explanation:
No answer description is available. Let's discuss.