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Environmental Chemistry question bank (Chemistry)

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Q1.

Which of these reactions is not a part of breakdown of ozone in stratosphere?

(A)

2 \overset{⊙}{Cl} O (g) \overset{}{\to} {ClO}_{2} (g) + \overset{⊙}{Cl} (g)

(B)

\overset{⊙}{ClO (g)} + O (g) \overset{}{\to} O_{2} (g) + \overset{⊙}{Cl}

(C)

\overset{⊙}{Cl} (g) + O_{3} (g) \overset{}{\to} O_{2} (g) + \overset{⊙}{ClO (g)}

(D)

{CF}_{2} {Cl}_{2} (g) \overset{uv}{\to} \overset{⊙}{Cl} (g) + \overset{⊙}{C} F_{2} Cl (g)

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Q2.

The normal rain water is slightly acidic and its $pH$ value is $5.6$ because of which one of the following ?

(A)

{CO}_{2} + H_{2} O \to H_{2} {CO}_{3}

(B)

N_{2} O_{5} + H_{2} O \to 2 {HNO}_{3}

(C)

2 {SO}_{2} + O_{2} + 2 H_{2} O \to 2 H_{2} {SO}_{4}

(D)

4 {NO}_{2} + O_{2} + 2 H_{2} O \to 4 {HNO}_{3}

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