Roasting of metallurgical ores is done mainly to ___________________?
Correct answer: D. Remove arsenic & sulphur
- A. Dehydrate it
- B. Sinter the ore
- C. Remove CO2 & H2O
- D. Remove arsenic & sulphur
Explanation
Roasting heats an ore in excess air, oxidising sulphides and volatile impurities such as sulphur and arsenic. Dehydration is associated mainly with calcination, while sintering agglomerates ore particles.
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
Black liquor is converted into white liquor by __________________________?
Which of the following is not an abrasive material ?
More than 100 percent of _________________ is present in oleum?
Liquor poisoning generally occurs due to the presence of _________________ in it ?
Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
Alcohol content in freshly prepared natural and fortified wine may be respectively around ______________ percent ?