Which is used in the Haber process for the manufacture of $NH_3$?

Which is True $(T)$ and False $(F)$ of the following statements?
$1.$ By catalyst,the forward reaction becomes fast and the reverse reaction becomes slow.
$2.$ $A$ catalyst decreases the potential energy of reactants and products.
$3.$ $A$ catalyst forms bonds in the reaction,so it is consumed.

Which of the following is used as a catalyst in the Fischer-Tropsch process for the synthesis of gasoline?

In the Haber process for the production of ammonia, $Al_2O_3$ is used as:

$2 SO_{2(g)} + O_{2(g)} \stackrel{V_{2}O_{5}}{\rightleftharpoons} 2 SO_{3(g)}$ is an example of

Which of the following acts as a negative catalyst?