In a country, following suggestions/ processes are being strictly followed:

(I) Liquefied CO₂ instead of Cl₂C = CCl₂ for dry cleaning
(II) H₂O₂ instead of SO₂ and Cl₂ for bleaching of papers and clothes.
(III) Biodiesel instead of normal refinery diesel for automobiles.
Which of the above are under green chemistry?

(I) Cl₂C = CCl₂ releases $\left(\mathrm{C}\stackrel{•}{\mathrm{l}}\right)$ which destroys ozone layer. Hence, use of liquefied CO, in dry cleaning is desirable.
(II) SO₂ and Cl₂ are bleaching agents but cause atmospheric pollution. Use of H₂O₂ is desirable, since waste is H₂O which drains out.
${\text{H}}_2{\mathrm{O}}_2\mathrm{\hspace{0.17em}}\stackrel{ }{\to }\hspace{0.17em}\hspace{0.17em}{\mathrm{H}}_2\mathrm{O}\mathrm{\hspace{0.17em}}+\mathrm{O}$
(III) Use of biodiesel releases no CO hence causes no pollution.