Meaning: n. 1. an odorless very poisonous gas that is a product of incomplete combustion of carbon 2. a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition 3. one who refuses to serve in the armed forces on grounds of conscience 4. a state in west central United States in the Rocky Mountains.
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181. A co - ordinated, activist and sceptical regulatory system is needed.
182. Considerable quantities of CO ? are adsorbed even by perfectly dry glass powder.