GS PrelimsScience and TechnologyGeneral Science2007

Which one of the following does not contain silver?

Horn Silver

German silver

Ruby silver

Lunar caustic

Correct Answer: Option B

Explanation

1. Horn Silver is a natural mineral form of silver chloride (AgCl). Contains silver. 2. German silver (also known as Nickel silver) is a copper alloy with nickel and often zinc. It is named for its silvery appearance but does not contain elemental silver. 3. Ruby silver refers to a group of minerals, including proustite (Ag₃AsS₃) and pyrargyrite (Ag₃SbS₃), which are ores of silver. Contains silver. 4. Lunar caustic is an archaic name for silver nitrate (AgNO₃). Contains silver.

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