Chemical Engineering - Chemical Engineering Basics

26.
Iron content in Indian iron ore is about __________ percent.
80-85
60-65
40-45
20-25
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is
full annealing
bright annealing
patenting
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
__________ of hard alloy and tool steel is done to make it easily machinable.
Case carburising
Tempering
Normalising
Annealing
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
Which of the following mainly decides the current to be employed is arc welding ?
Electrode size
Plate thickness
Voltage across the arc
Welded portion length
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
Temperature attained in soldering of metals is about __________ °C.
150-300
400-500
650-800
1000-1100
Answer: Option
Explanation:
No answer description is available. Let's discuss.