Question : What is dry ice?
Option 1: Solid Carbon dioxide
Option 2: Solid Nitrogen dioxide
Option 3: Solid Sulphur dioxide
Option 4: Solid water
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Correct Answer: Solid Carbon dioxide
Solution : The correct option is Solid Carbon dioxide.
Dry ice is solid carbon dioxide (CO2) at a temperature of -78.5°C. It sublimates immediately from a solid to a gas, generating carbon dioxide gas that can displace oxygen in confined environments. Because of its extreme cold and the possibility of oxygen displacement, it should be handled with caution. Dry ice is used to transport and store frozen commodities, medical supplies and perishable objects that must be kept at extremely low temperatures. In laboratories, it's also employed for low-temperature research.
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Question : Transboundary pollution ( or ) Acid rain is caused by:
Option 1: Carbon monoxide
Option 2: Carbon dioxide
Option 3: Hydrocarbon
Option 4: Nitrogen oxide and sulphur dioxide
Question : Which of the following gases is most toxic ?
Option 1: Carbon dioxide
Option 2: Carbon monoxide
Option 3: Sulphur dioxide
Option 4: Chlorine
Question : Global warming is mainly due to the accumulation of Which of the following?
Option 1: Oxides of Nitrogen
Option 2: Oxides of Sulphur
Option 3: Carbon Dioxide
Option 4: Carbon monoxide
Question : The most serious air pollutant causing health harzard is:
Option 1: Sulphur dioxide
Option 3: Ozone
Option 4: Nitrogen oxide
Question : Fire extinguishers emit which gas?
Option 2: Chlorine
Option 3: Carbon dioxide
Option 4: Nitrogen
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