Carbon dioxide can be used _________.

as a refrigerant for frozen foods

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as fire extinguisher

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to manufacture urea

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to manufacture acetone

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Solution

The correct options are
A as a refrigerant for frozen foods
B as fire extinguisher
C to manufacture urea
$C O_{2}$ produced in solid form as dry ice is used as a refrigerant for frozen foods.
Being heavy and non-supporter of combustion, it is used as fire extinguisher.
A substantial amount of $C O_{2}$ is used to manufacture urea.

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Similar questions

Give reasons for the following :

(a) An excess of carbon dioxide increases the temperature of the earth.

(b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires.

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

Carbon dioxide is used in extinguishing a fire.

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