Which of the following is a CORRECT statement?
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Which of the following is an amphoteric oxide?
Except Helium, all noble gases have how many electrons in the outermost shell?
Which of the following metals is found in free state?
What is the minimum age to become the Prime Minister of India if he or she is a member of Rajya Sabha?
Who has been appointed as the Chief Secretary of the Delhi Government in December 2017?
What is the name of the most ancient spiral galaxy that existed 11 billion years ago?
Exobiology refers to