The catalyst used for Haber process is platinum.

Which of the following statements is/are correct?

Is the following reaction will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction.

 ${\mathrm{C}\mathrm{O}\mathrm{C}\mathrm{l}}_2\mathrm{}\left(\mathrm{g}\right)\rightleftharpoons \mathrm{C}\mathrm{O}\mathrm{}\left(\mathrm{g}\right)+{\mathrm{C}\mathrm{l}}_2\mathrm{}\left(\mathrm{g}\right)$

The preparation of ${\mathrm{SO}}_3\left(\mathrm{g}\right)$ by the reaction, ${\mathrm{SO}}_2 \left(\mathrm{g}\right)+\frac{1}{2}{\mathrm{O}}_2 \left(\mathrm{g}\right)\rightleftharpoons {\mathrm{SO}}_3 \left(\mathrm{g}\right)$,

shows the following figure in $\%$ yield against pressure at different temperature, then:

The product of the following reaction is

${\mathrm{C}}_{\mathrm{2}}{\mathrm{H}}_4\left(\mathrm{g}\right)+{\mathrm{O}}_{\mathrm{2}}\stackrel{\mathrm{Pd}/{\mathrm{Al}}_{\mathrm{2}}{\mathrm{O}}_{\mathrm{3}}}{\to }$

Select whether the following statement is true or false:

The catalyst that is used in Oswald's Process is calcium gauze.

Is the following reaction will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction.
${\mathrm{C}\mathrm{O}}_2\mathrm{}\left(\mathrm{g}\right)+\mathrm{C}\mathrm{}\left(\mathrm{s}\right)\rightleftharpoons \mathrm{}2\mathrm{C}\mathrm{O}\mathrm{}\left(\mathrm{g}\right)$
 

Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction.

${\mathrm{C}\mathrm{a}\mathrm{C}\mathrm{O}}_3\mathrm{}\left(\mathrm{s}\right)\rightleftharpoons \mathrm{C}\mathrm{a}\mathrm{O}\mathrm{}\left(\mathrm{s}\right)+{\mathrm{C}\mathrm{O}}_2\mathrm{}\left(\mathrm{g}\right)$

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$