Study the given table carefully. Recall
the topic of common primary and secondary pollutants of ...
Study the given table carefully. Recall
the topic of common primary and secondary pollutants of \( \quad \) Which compound is generally added to petrol to air, their effects and other related concep:o make it burn smoothly ?
W.
TABLE. Air quality over selected Indian Cities (Annual average of \( 24 \mathrm{Hr} \) ).
(a) Tetramethyl lead
(b) Tetraethyl lead
(c) Dichloro-Diphenyl-Trichloroethane
All values are in \( \mathrm{mg} / \mathrm{m}^{3} \)
(d) Calcium carbonate
\begin{tabular}{|l|l|l|l|}
\hline City & \( \mathbf{S P} \mathbf{M} \) & \( \mathbf{S O}_{\mathbf{2}} \) & \( \mathbf{N O}_{2} \) \\
\hline Agra & \( 308.0 \) & \( 15.50 \) & \( - \) \\
Ahmedabad & \( 249.27 \) & \( 41.57 \) & \( 25.67 \) \\
Baroda & \( 316.9 \) & \( 14.2 \) & \( 37.9 \) \\
Mumbai & \( 190.6 \) & \( 38.34 \) & \( 19.88 \) \\
Kolkota & \( 430.58 \) & \( 53.26 \) & \( 27.76 \) \\
Cochin & \( 114.5 \) & \( 33.35 \) & \( 7.7 \) \\
Delhi & \( 400.88 \) & \( 31.14 \) & \( 31.06 \) \\
Hyderabad & \( 248.66 \) & \( 21.8 \) & \( 9.54 \) \\
Jaipur & \( 301.74 \) & \( 7.98 \) & \( 11.94 \) \\
Kanpur & \( 327.34 \) & \( 15.4 \) & \( 14.28 \) \\
Madras & \( 143.34 \) & \( 13.32 \) & \( 12.6 \) \\
Nagpur & \( 209.78 \) & \( 10.62 \) & \( 14.96 \) \\
Vishakhapatnam & \( 129.08 \) & \( 24.35 \) & \( 8.5 \) \\
\hline
\end{tabular}
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