Chemical Engineering - Chemical Engineering Basics

36.
The phenomenon of strain-ageing is generally experienced with
cast iron.
low carbon steel.
high manganese steel.
high carbon steel.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
The capacity of a material to absorb energy depends upon both its strength & stiffness. The term 'stiffness' of a material is the opposite of its
flexibility
plasticity
hardness
hardenability
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
Filler metal is not used in the __________ welding.
seam
electric spot
projection
all a, b & c
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)
2300 J
4600 J
230 J
2.3 x 106 J
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
Sudden immersion/dipping of red hot steel bar in water makes it
malleable & tough.
ductile & soft.
brittle & hard.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.