A) \[{{K}_{2}}C{{O}_{3}}+CuS\]
B) \[N{{a}_{2}}C{{O}_{3}}+CaS\]
C) \[{{K}_{2}}C{{O}_{3}}+N{{a}_{2}}S\]
D) \[N{{a}_{2}}C{{O}_{3}}+N{{a}_{2}}S\]
Correct Answer: B
Solution :
A mixture of\[N{{a}_{2}}C{{O}_{3}}\]and\[CaS\]is called black ash.
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