Determination of ash content of coal during its proximate analysis, the temperature of weighed coal sample is raised to 400 - 500°C in half an hour and maintained at the same level for further half an hour. The temperature is then raised to . . . . . . . . °C at which the sample is heated for one more hour before weighing it.
A. 775 ± 25
B. 875 ± 25
C. 975 ± 25
D. 1075 ± 25
Answer: Option A
This Question Belongs to Metallurgical Engineering >> Metallurgical Analysis
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