Combination of acid — task. Science TNSB Mentoring, Class 9.

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Q. No.	Column I	Column I
1.	Noble metal	Zinc Copper Silver
2.	Aquaregia	Dissolves sodium Dissolves gold Dissolves copper
3.	Base but not an alkali	\(Zn(OH)_2\) \(NaOH\) \(KOH\)

10. Combination of acid