Question : The gas used to extinguish fire is
Option 1: Neon
Option 2: Nitrogen
Option 3: Carbon dioxide
Option 4: Carbon monoxide
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Correct Answer: Carbon dioxide
Solution : The correct option is Carbon dioxide.
Carbon dioxide (CO2) is a popular fire-extinguishing gas. Carbon dioxide suppresses flames by displacing oxygen, one of the basic components required for combustion. When carbon dioxide enters a fire, it decreases the oxygen concentration in the immediate vicinity, smothering the flames and stopping further combustion. This approach is very effective for putting out flames in small places, electrical fires, and fires involving flammable liquids.
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Question : The gas causing acid rain in an industrial area is
Option 1: carbon dioxide
Option 2: carbon monoxide
Option 3: sulphur dioxide
Option 4: methane
Question : The gas produced in marshy places due to decomposition of vegetation is
Option 1: Carbon monoxide
Option 2: Carbon dioxide
Option 3: Sulphur dioxide
Option 4: Methane
Question : Haemoglobin has highest affinity for
Option 1: Oxygen
Option 3: Carbon monoxide
Option 4: Nitrogen
Question : The gas that causes suffocation and death when coal or coke is burnt in a closed room is
Option 1: Methane
Option 2: Ethane
Option 3: Carbon Monoxide
Option 4: Carbon Dioxide
Question : Which of the following groups of gases contribute to the "Green House Effect"?
Option 1: Carbon dioxide and Methane
Option 2: Ammonia and Ozone
Option 3: Carbon monoxide and Sulphur dioxide
Option 4: Carbon tetrafluoride and Nitrous oxide
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