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Q.

For dry cleaning of clothes instead of  tetrachloroethane which is carcinogenic  in nature, which of the following solvents can be used ?

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a

Liquid CO2

b

H2O2

c

Liquid O3

d

Petrol

answer is A.

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Detailed Solution

Now–a–days, CCl2  =  CCl2  (tetrachloroethene) which is a suspected carcinogenic  is replaced by a better solvent like liquid CO2  with suitable detergent  in dry cleaning. NOTE….It should be tetrachloroethene in the question
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