UGC NET December 2020 and June 2021 Answer Key- UGC NET 2021 Answer Key has been released on the official website . NTA conducted Phase I of UGC-NET December 2020 and June 2021 between 20 November 2021 and 05 December 2021, Phase II between 24 December to 27 December 2021, and Phase III on 04 and 05 January 2022 through Computer…
Read moreAir Pollution Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common…
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