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Stratospheric Pollution

X is a brown ...

Question

X is a brown gas. It reacts with sunlight to form gas Y and free oxygen atom. Free oxygen atom reacts with $O_{2} (g)$ gives ozone. Gas Y reacts with this ozone gives X again. X and Y are respectively

N_{2} O_{5}

and

N O

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N O_{2}

and

N O

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N O

and

N O_{2}

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N O

and

N_{2} O

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Solution

The correct option is B $N O_{2}$ and $N O$
$N O_{2}$ absorbs energy from sunlight and breaks up into nitric oxide and free oxygen atom.

$N O_{2} (g) + h v \to N O (g) + O (g)$

Oxygen atoms are very reactive and combine with the $O_{2}$ in air to produce ozone.

$O (g) + O_{2} (g) \to O_{3} (g)$

$N O (g)$ obtained in the (i) reaction, reacts with ozone to regenerate $N O_{2} (g)$

$N O (g) + O_{3} (g) \to N O_{2} (g) + O_{2} (g)$

X and Y are respectively $N O_{2}$ and $N O .$

Option B is correct.

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X is a brown gas. It reacts with sunlight to form gas Y and free oxygen atom. Free oxygen atom reacts with O2(g) gives ozone. Gas Y reacts with this ozone gives X again. X and Y are respectively

X is a brown gas. It reacts with sunlight to form gas Y and free oxygen atom. Free oxygen atom reacts with $O_{2} (g)$ gives ozone. Gas Y reacts with this ozone gives X again. X and Y are respectively