Assertion For the reaction, 2NO g O g 2NO Increase in pressure favours the formation of NO2. Reason The reaction is exothermic (AIIMS 2009)

According to the Le-Chatelier’s principle, with the increase in pressure, the reaction is favoured in the direction where lesser number moles are present. So, according to the given reaction, lesser number moles are present towards the product side. Hence, with the CHEMICAL EQUILIBRIUM 60 increase in pressure the reaction will move in forward direction, forming more 2 NO . And the given reaction is a type of combustion reaction. So, the reaction is an exothermic reaction. Hence, option (b) is the correct answer.