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Q.

Incorrect statement regarding CO2 is

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a

Cardice is the solid CO2

b

Dry ice is used as refrigerant

c

CO2 is used in making urea

d

CO2 is insoluble in water.

answer is D.

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Detailed Solution

→CO2 solidifies at -78°C solid CO2 is called as dry ice (or) cardice or dry cold→It is used as refrigerant 2NH3+CO2⇌NH2COONH4 [Ammoniumcarbanate] →NH2CONH2+H2OCO2 is soluble in water and forms carbonic acidCO2+H2O⇌H2CO3
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