When pressure is applied to the system $Ice \rightleftharpoons Water$,what will happen?

For the reversible reaction,
$N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)} + \text{heat}$
The equilibrium shifts in the forward direction:

Explain the effect of temperature on equilibrium using a suitable experiment.

In which of the following equilibrium reactions,the equilibrium would shift to the right,if total pressure is increased?

If ice and water are at equilibrium,then which condition is correct to obtain a high amount of water?
$Ice \rightleftharpoons Water$

When an orange solution containing $Cr_{2}O_{7}^{2-}$ ions is treated with an alkali,a yellow solution is formed,and when $H^{+}$ ions are added to the yellow solution,an orange solution is obtained. Explain why this happens.