How many atoms are present in one molecule of Ozone?
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Who was the first woman president of Indian National Congress in pre-Independent India?
If a mirror is placed on the line AB, then the right figure is
Which of the following three R's are regarded as environment friendly?
If a mirror is placed on the line MN, choose the right image of the given figure?
Which among the following is the major cause of acid rain?
Who wrote the book 'Glimpses of World History'?
Disguised unemployment in India is mainly related to