Solve this multiple-choice question and choose the correct option.

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Metals (coinage group): Which of the following pairs does not contain any coinage metal? Coinage metals are Cu, Ag and Au in Group 11 of the periodic table. Choose the pair with zero coinage metals.

Difficulty: Easy

Zinc and tin
Silver and gold
Copper and silver
Copper and gold

Correct Answer: Zinc and tin

Explanation:

Given data

Coinage metals: copper (Cu), silver (Ag), gold (Au).

Concept/ApproachPairs containing any of Cu/Ag/Au include coinage metals and are therefore not correct. A pair of non-coinage metals (e.g., Zn and Sn) contains none.

ReasoningCheck each pair:• Silver & gold → both coinage (reject).• Copper & silver → both coinage (reject).• Copper & gold → both coinage (reject).• Zinc & tin → neither is coinage (accept).

Final AnswerZinc and tin

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