A) \[CaSi{{O}_{3}}\]
B) \[Si{{O}_{3}}\]
C) \[Ca{{(OH)}_{2}}\]
D) \[CaO\]
Correct Answer: A
Solution :
Key Idea: \[\underset{(impurities)}{\mathop{Gangue}}\,\,+\,flux\xrightarrow{{}}slag\] \[Si{{O}_{2}}+CaO\xrightarrow{{}}CaSi{{O}_{3}}\] Slag is formed by reaction of flux with infusible impurities. It floats on surface of metal.
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