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In the reverberatory furance...

In the reverberatory furance

A

The flames are in contact with the charge

B

The flames do not come in contact with the charge

C

Only hot gases come in contact with the charge

D

The flames are not at all there

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### Step-by-Step Solution: 1. **Understanding the Reverberatory Furnace**: - A reverberatory furnace is a type of furnace that uses a flame to heat materials. The flame is directed onto the roof of the furnace, which then reflects down onto the charge (the material being processed). 2. **Analyzing the Options**: - **Option A**: "The flames are in contact with the charge." - This statement is incorrect. In a reverberatory furnace, the flames do not directly contact the charge; instead, the heat is reflected from the roof onto the charge. - **Option B**: "The flames do not come in contact with the charge." - This statement is also incorrect. While the flames do not directly contact the charge, the heat from the flames does eventually reach the charge as it accumulates and is heated over time. - **Option C**: "Only hot gases come in contact with the charge." - This statement is correct. The hot gases produced by the combustion of fuel do come into contact with the charge, heating it effectively. - **Option D**: "The flames are not at all there." - This statement is incorrect. The presence of flames is a defining characteristic of a reverberatory furnace, as they are essential for the heating process. 3. **Conclusion**: - After evaluating all the options, the correct answer is **Option C**: "Only hot gases come in contact with the charge."
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