JEE MAIN - Chemistry (2020 - 6th September Morning Slot - No. 9)
The correct statement with respect to
dinitrogen is :
N2 is paramagnetic in nature
it can be used as an inert diluent for
reactive chemicals
it can combine with dioxygen at 25oC
liquid dinitrogen is not used in cryosurgery
Explanation
(1) N2
is diamagnetic, with no unpaired elctrons.
(2) In iron and chemical Industry because of its inertness it is used where an inert atmosphere is required.
(3) N2 does not combine with oxygen, hydrogen or most other elements. Nitrogen will combine with oxygen, however in the presence of lightining or a spark.
(4) Liquid nitrogen is used as a refrigerant to preserve biological material food items and in cryosurgery.
(2) In iron and chemical Industry because of its inertness it is used where an inert atmosphere is required.
(3) N2 does not combine with oxygen, hydrogen or most other elements. Nitrogen will combine with oxygen, however in the presence of lightining or a spark.
(4) Liquid nitrogen is used as a refrigerant to preserve biological material food items and in cryosurgery.
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