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The following search engine was exclusively meant for searching scientific information :

  • A.Google
  • B.Alta-vista
  • C.Dogpile
  • D.SCIRUS

Answer: D

The search engine meant only for scientific information was SCIRUS.

Scirus was launched by Elsevier in 2001 as a science-specific search engine. It indexed scientific journal content together with scientists' web pages, preprint servers, patents and institutional repositories, filtering out non-scientific sites, and was a common tool in libraries until it was retired in 2014.

Google and AltaVista are general web search engines that index all kinds of pages, and Dogpile is a metasearch engine that sends a query to several general engines at once. None of them was limited to scientific information.

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