scientist, discoveries & inventions MCQ section 4 MCQ Questions & Answers Detailed Explanation

Answer: (d)

The oral polio vaccine (OPV) was developed in 1961 by Albert Sabin. Also called “trivalent oral polio vaccine” or “Sabin vaccine”, OPV consists of a mixture of live, attenuated (weakened) poliovirus strains of all three poliovirus types.

OPV produces antibodies in the blood to all three types of poliovirus. In the event of infection, these antibodies protect against paralysis by preventing the spread of wild poliovirus to the nervous system.

Answer: (d)

In 1800, Alessandro Volta, an Italian physicist, invented the first true battery, which came to be known as the voltaic pile.

The voltaic pile consisted of pairs of copper and zinc discs piled on top of each other, separated by a layer of cloth or cardboard soaked in brine (i.e., the electrolyte).

Answer: (c)

Answer: (a)

Araneology is a branch of zoology that deals with the study of spiders. It is a branch of Arachnology, the scientific study of spiders and related animals such as scorpions, pseudo-scorpions, and harvestmen, collectively called arachnids.

Answer: (d)

Tim Berners-Lee is a British computer scientist and the inventor of the World Wide Web.

He made a proposal for an information management system in March 1989, and on 25 December 1990, with the help of Robert Cailliau and a young student at the European Organization for Nuclear Research (CERN), he implemented the first successful communication between a Hypertext Transfer Protocol (HTTP) client and server via the Internet.

Answer: (b)

Along with the surgeon Patrick Steptoe, Robert Edwards successfully pioneered conception through IVF, which led to the birth of Louise Brown in 1978. They founded the first IVF program for infertile patients and trained other scientists in their techniques.