Environmental chemistry

Kindly go through the solution

(a)

Kindly go through the solution

(a)

Kindly go through the solution

Chlorine nitrate as hydrolysis gives hypohalous acid and nitric acid as,

$C\mathcal{l}ON{O}_2+H_{2}O\to \underset{A}{HOC\mathcal{l}}+\underset{B}{HN{O}_3}$                

Chlorine nitrate on reaction with HCl produces Cl₂ and HNO₃ as,

$C\mathcal{l}ON{O}_2+HC\mathcal{l}\to \underset{C}{C{\mathcal{l}}_2}+\underset{B}{HN{O}_3}$            

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (a), (d); (ii)→ (c); (iii)→ (a); (iv)→ (b)

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (e); (ii)→ (d); (iii)→ (a); (iv)→ (b) ; (v)→ (c)

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (d); (ii)→ (e); (iii)→ (a); (iv)→ (c) ; (v)→ (b)

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (c); (ii)→ (d); (iii)→ (b); (iv)→ (a)

This is a Multiple choice Questions as classified in NCERT Exemplar

Options (i) and (ii) are correct since 75% of the solar energy reaching the earth is being absorbed by the earth's surface and this increases its temperature. The rest of the heat radiates back to the atmosphere. The average global temperature will increase to a level, and this leads to melting of polar ice caps and flooding of low-lying areas all over the earth. Increase in the global temperature increases the incidence of inectious diseases like malaria, dengue,   yellow fever etc.

This is a Multiple choice Questions as classified in NCERT Exemplar

Options (ii), (iii) and (iv)  are correct since rainwater has a pH of 5.6 due to the presence of H+ ions formed by the reaction of rainwater with carbon dioxide present in the atmosphere. The reactions can be shown as-

H₂O (l)+CO₂ (g)→H₂CO₃ (aq)

H₂CO₃ (aq)→H+ (aq)+HCO₃ (aq)

If the pH of the rainwater falls below 5.6 then it is known as acid rain. SO₂ and NO₂ after oxidation and reaction with water are major contributors to the acid rain.

2SO₂ (g)+O₂ (g)+2H₂O (l)→2H₂SO₄ (aq)

4NO₂ (g)+O₂ (g)+2H₂O (l)→4HNO₃⁻ (aq)