GK
INVENTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Roentgen
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Ramsay
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Dalton
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Newton
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Detailed explanation-1: -Sir William Ramsay is the Scottish scientist who discovered inert gas. He is known for introducing a whole new group to the periodic table. Over a period of time that new group is known as inert, rare, or noble gases.
Detailed explanation-2: -At the meeting of the British Association in August 1894, they announced the discovery of argon. While seeking sources of argon in the mineral kingdom, Ramsay discovered helium in 1895.
Detailed explanation-3: -While analyzing the chromosphere of the Sun, Pierre Janssen and Joseph Norman Lockyer discovered a new element on 18 August 1868, and named it helium after the Greek word for the Sun. At that time, no chemical analysis was possible at that time but this gas was later found to be a noble gas.