KERALA PSC / CHEMISTRY / IMPORTANT ELEMENTS / HELIUM / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / CHEMISTRY / IMPORTANT ELEMENTS / HELIUM / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / CHEMISTRY / IMPORTANT ELEMENTS / HELIUM / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

·      Helium is a noble gas. Its atomic number is 2. Liquid Helium is used as Cryogenic.

·      To provide inert atmosphere for welding use helium and argon

·      To prevent oxidation of metals such as magnesium and steel helium is used

·      Helium due to its non – inflammability and less diffusion is preferred for filling weather balloons airships

·      Helium being less soluble in blood than nitrogen, it is mixed with oxygen and used for respiration by deep sea drivers

·      Helium was first discovered in Sun’s atmosphere

KERALA PSC / CHEMISTRY / IMPORTANT ELEMENTS / HELIUM / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY