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Environmental-Issues

Chlorine atoms in upper atmosphere cause breakdown of ozone.
$C l + O_{3} \to O_{2} + C l O$
$C l O + O \to C l + O_{2}$
Which statements about se chlorine atoms are correct?
$1$ . The chlorine atoms act as catalysts.
$2$ . The chlorine atoms are free radicals.
$3$ . The chlorine atoms are formed by heterolytic fission of a covalent bond in chlorofluorocarbons.

1, 2

and

3

are correct

1

and

2

only are correct

2

and

3

only are correct

1

only is correct

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What is the meaning of environmental protection?</h2></div>

Chlorine atoms in upper atmosphere cause breakdown of ozone.
$C l + O_{3} \to O_{2} + C l O$
$C l O + O \to C l + O_{2}$
Which statements about se chlorine atoms are correct?
$1$ . The chlorine atoms act as catalysts.
$2$ . The chlorine atoms are free radicals.
$3$ . The chlorine atoms are formed by heterolytic fission of a covalent bond in chlorofluorocarbons.

Which one of the following options correctly designate the percent contribution of gases (A, B, C and D) responsible of global warming?<table class="wysiwyg-table"><tbody><tr><td> </td><td>A</td><td>B</td><td>C</td><td>D</td></tr><tr><td>(1)</td><td>CH4(20%)</td><td>CFCs(14%)</td><td>N2O(6%)</td><td>CO2(60%)</td></tr><tr><td>(2)</td><td>CFCs(20%)</td><td>CO2(14%)</td><td>N2O(6%)</td><td>CH4(60%)</td></tr><tr><td>(3)</td><td>N2O(20%)</td><td>CH4(14%)</td><td>CFCs(6%)</td><td>CO2(60%)</td></tr><tr><td>(4)</td><td>CH4(20%)</td><td>N2O(14%)</td><td>CFCs(6%)</td><td>CO2(60%)</td></tr></tbody></table></h2><div class="Question_backgroundImg__6PgwQ"><img loading="lazy" src="./images/1631149_d6c9014bdd894556b467431f1919aa62.PNG" class="Question_questionImage__Ib90R" alt="image"></div></div>

Chlorine atoms in the upper atmosphere cause the breakdown of ozone. Cl+O3→O2+ClO ClO+O→Cl+O2 Which statements about these chlorine atoms are correct? 1. The chlorine atoms act as catalysts. 2. The chlorine atoms are free radicals. 3. The chlorine atoms are formed by heterolytic fission of a covalent bond in chlorofluorocarbons. </h2></div>

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What is the meaning of environmental protection?</h2></div>

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$1$ and $2$ only are correct