Addition of ____________________ to steel does not help in improving its machinability?
Correct answer: B. Silicon
- A. Sulphur
- B. Silicon
- C. Lead
- D. Phosphorous
Explanation
Sulphur, lead and phosphorus are commonly added to steel to improve machinability by promoting easier chip breaking or reducing tool friction. Silicon mainly acts as a deoxidizer and does not provide this machinability improvement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Consumable electrodes are used in the ____________________ welding?
An oxidation process is accompanied with decrease in the____________________?
Austempering of steel requires it to be heated to 875°C followed by sudden cooling to 250- 525°C, thereby changing austenite to___________________?
In electrical resistance welding, distortion results from the use of improper________________?
Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio) ?
Cold chisel & hammers are made of_________________?