Q1: Catalytic ammonia synthesis reaction as in Haber's process is

ANS:B - exothermic

The catalytic ammonia synthesis reaction, such as that in the Haber process, is an exothermic reaction. This means that it releases heat energy into the surroundings during the reaction. The reaction is represented by: 𝑁2(𝑔)+3𝐻2(𝑔)⇌2𝑁𝐻3(𝑔)N2​(g)+3H2​(g)⇌2NH3​(g) This reaction produces ammonia (NH3) from nitrogen gas (N2) and hydrogen gas (H2) in the presence of a catalyst, typically iron with a promoter like potassium oxide. An exothermic reaction releases more energy (in the form of heat) than it absorbs, resulting in a net release of energy. In the case of the Haber process, the formation of ammonia from nitrogen and hydrogen liberates energy, making it exothermic. So, the correct answer is exothermic.