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Q. |
Which of these gases is used for heating open-hearth furnaces? |
A. | oil gas |
B. | producer gas |
C. | biogas |
D. | water gas |
Answer» B. producer gas | |
Explanation: producer gas is known as a combination of combustible gases, carbon monoxide, and hydrogen. this gas finds its application in the heating of open-hearth furnaces, muffle furnaces, and retorts used in the production of coke. also, it can be used as a reducing means in metallurgical practices. |
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