Green chemistry in day–to–day life is in the use of:

Options

A. Large amount of water alone for washing clothes
B. Liquified `CO_2` for dry cleaning of clothes
C. Chlorine for bleaching of paper
D. Tetrachloroethene for laundry

Answer

B

Explanation

`C Cl_2 = C Cl_2` was earlier used as solvent for dry cleaning agent but it is carcinogen. So liquid `CO_2` is used.
Replacement of halogenated solvent by liquid `CO_2` will result in less harm to ground water.