NCERT Class 12/MCQ Questions for Class 12 Physics Chapter 12 Atoms MCQs :- multiple choice questions and answers. e.g NCERT Class 12 MCQS,NCERT Class 12 Mock Tests , NCERT Class 12 Practice Papers ,NCERT Class 12 Sample Test,NCERT Class 12 Sample questions

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Question 1: An atom stays in an excited state for about:

10 micro seconds

10 milli seconds

10 nano seconds

10 seconds

Total MCQS Questions are 18 in this paper MCQ Questions for Class 12 Physics Chapter 12 Atoms