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

 

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

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

·      In the free states, nitrogen constitutes nearly 80% of the air.

·      Nitrogen is the largest single constituent of the Earth’s atmosphere (78.082% by volume of dry air, 75.3% by weight in dry air)

·      Atomic number -7

·      Nitrogen obtained from air through fractional distillation is called Atmospheric Nitrogen

·      Nitrogen obtained from nitrogenous compounds is called Chemical nitrogen

·      Nitrogen is neither combustible nor a supporter of combustion.

·      Nitrogen is a non-poisonous gas. Nevertheless animals die in an atmosphere of nitrogen for want of oxygen they need to breathe

·      The Nitrogen Cycle: The sum total of the transformations undergone by nitrogen and nitrogenous compounds in nature in relation to the living organisms.

·      Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives) and cyanides, contain nitrogen

·      The element nitrogen was discovered by Scottish physician Daniel Rutherford in 1772

·      It is a constituent element of amino acids and thus of proteins, and of nucleic acids (DNA and RNA)

·      It resides in the chemical structure of almost all neurotransmitters, and is a defining component of alkaloids, biological molecules produced by many organisms

·      It is created by fusion processes in stars, and is estimated to be the 7^th most abundant chemical element by mass in the universe.

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