General Knowledge MCQs
General Knowledge MCQ PDF - Topics
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"The name of extremely effective fire extinguishing agent is" MCQ PDF: ozone layer depletion with choices helium, halon, halogens, and argon for high school entrance exam. Study ozone layer depletion quiz questions for merit scholarship test and certificate programs for free career test.
MCQ: The name of extremely effective fire extinguishing agent is
MCQ: Chemical substance used in industry for cold cleaning, is known as
MCQ: Layer of atmosphere in which the Ozone layer lies is
MCQ: Montreal protocol to reduce the production of chlorofluorocarbons was assigned in
MCQ: Number of atoms in ozone molecules are