{:(1.,"Chemical symbol of potassium","(a)","Ca"),(2.,"Chemical symbol – InterviewSolution

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1.	{:(1.,"Chemical symbol of potassium","(a)","Ca"),(2.,"Chemical symbol of calcium","(b)","Cu"),(3.,"Element with valency 4","(c)",Cu^(+)),(4.,"Element with variable valencies","(d)","K"),(5.,"Cation","(e)","C"):}
Answer» ANSWER :d, a, E, B, C

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