Q: Which one of the following is not a monatomic element?
(a)Copper
(b)Helium
(c)Iodine
(d)Barium
Correct Answer: (c)
The correct answer is (c) 'आर्गॉन'. This question from the General Studies domain tests knowledge of Miscellaneous.
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NDA 2019 Session IIChemistryQ. 89 of 138