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A sample of any of the following substances disappears after some time when exposed to air, like camphor, naphthalene or dry ice. This phenomenon is called
This question appeared in the UPPSC Prelims 2019 examination (GS-I). It is Question 124 out of 219 questions in this paper.
This question was part of the UPPSC Prelims 2019 (GS-I). The UPPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all UPPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.