During smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as :

Slag

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Mud

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Gangue

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Flux

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Solution

The correct option is D Flux
Flux is a substance which may be either acidic oxide $(S i O_{2})$ or basic oxide $(C a O, M g O)$ . It combines with certain impurities (gangue particles) in order to form a substance called slag. This can be easily removed.

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Q. Fill in the blanks with the correct choice.
The undesired impurities present in the ores are called ___(i)___. To remove the volatile impurities from the ore, the ___(ii)___ process is carried out. Flux combines with non-fusible impurities to form ___(iii)___.

C a O

acts as a ___(iv)___ flux.

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During smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as :

The correct option is D FluxFlux is a substance which may be either acidic oxide (SiO2) or basic oxide (CaO,MgO). It combines with certain impurities (gangue particles) in order to form a substance called slag. This can be easily removed.

The correct option is D Flux
Flux is a substance which may be either acidic oxide $(S i O_{2})$ or basic oxide $(C a O, M g O)$ . It combines with certain impurities (gangue particles) in order to form a substance called slag. This can be easily removed.