Question

How many of the following is/are the correct match.
(i) Photochemical smog:
$C{F}_{2}C{l}_2$ (common component)
(ii) Ozone layer: Protects from the Sun's radiation of wavelength $255nm$
(iii) Methemoglobinemia: Caused by the presence of greater than $50ppm$ of nitrate in drinking water
(iv) Ozone layer depletion:
$(ClO{)}^{.}(g)+O(g)\to C{l}^{.}(g)+O_2(g)$ (one of the reaction involved)
(v) DDT: Biodegradable pollutant
(vi) Green house gas: Methane

Answer 1

Answer: 4

(i) $C{F}_{2}C{l}_2$ compound responsible for ozone depletion.
(ii) Ozone layer: Protects from the Sun's radiation of wavelength $255nm$
(iii) Drinking water with high nitrate can cause a potentially fatal disorder called methemoglobinemia. Methemoglobinemia is a condition in which more than one percent of the hemoglobin in red blood cells take the form of methemoglobin.
(iv) Ozone layer depletion:
${\left(ClO\right)}^{\cdot }(g)+O(g)\to {\left(Cl\right)}^{\cdot }(g)+O_2(g)$ (one of the reaction involved)
(v) DDT: Non-Biodegradable pollutant
(vi)The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.