The group having triangular planar structures is :

A gas undergoes change from state A to state B. In this process, the heat absorbed and work done by the gas is 5 J and 8 J, respectively. Now gas is brought back to A by another process during which 3 J of heat is evolved. In this reverse process of B to A :

Which one of the following is an oxide?

The following reaction occurs in the Blast Furnace where iron ore is reduced to iron metal :

Fe₂O₃(s) + 3 CO(g) $$\rightleftharpoons$$ 2 Fe(1) + 3 CO₂(g)

Using the Le Chatelier’s principle, predict which one of the following will not disturb the equilibrium ?