The gas phase reaction 2NO₂(g) $$ \to $$ N₂O₄(g) is an exothermic reaction. The decomposition of N₂O₄, in equilibrium mixture of NO₂(g) and N₂O₄(g), can be increased by :

Among the following, the incorrect statement is :

The incorrect geometry is represented by :

Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?