Match the entries of Column I with appropriate entries of Colunin II \( \begin{array}{ll}\text {...

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Match the entries of Column I with appropriate entries of Colunin II
\( \begin{array}{ll}\text { Column I } & \text { Column II } \\ \text { (i) London smog (a) Formed in summer due to } \\ \text { presence of } \mathrm{SO}_{2} \text { and humidity } \\ \text { in the air } \\ \begin{array}{ll}\text { (ii) Photochemical (b) Formed in winter due to } \\ \text { pmog } & \text { presence of } \mathrm{SO}_{2} \text { and humidity } \\ \text { in the air } \\ & \text { (c) Formed in summer when air } \\ \text { contains } \mathrm{NO}_{2} \text { and } \\ & \text { hydrocarbons } \\ & \text { (d) Formed in winter due to } \\ \text { presence of } \mathrm{NO}_{2} \text { and } \\ \text { hydrocarbons in the air }\end{array}\end{array} \)
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