UPSC,PCS,CDS,NDA /Atmosphere Multiple Choice Questions Set 1 MCQs :- multiple choice questions and answers. e.g UPSC,PCS,CDS,NDA MCQS,UPSC,PCS,CDS,NDA Mock Tests , UPSC,PCS,CDS,NDA Practice Papers ,UPSC,PCS,CDS,NDA Sample Test,UPSC,PCS,CDS,NDA Sample questions

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Question 1: Which of the following are true regarding the ionosphere? I. It is the uppermost layer of the atmosphere, II. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized, III. This layer is responsible for reflecting back the radio wave transmitted from the earth

I and II

I and II

. II and III

. I II and III

Total MCQS Questions are 85 in this paper Atmosphere Multiple Choice Questions Set 1
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