Most Reliable IIT-JAM Classes Mulund- Mumbai
IIT JAM Classes Mulund Mumbai: IIT-JAM is an entrance examination conducted by the Indian Institutes of Technology (IITs) on a rotational basis for admission to various postgraduate programs such as M.Sc, Joint M.Sc-PhD, M.Sc-PhD Dual Degree, and other postgraduate courses. The exam is aimed at testing the candidate’s understanding of various subjects such as Physics, Chemistry, Mathematics, Biotechnology, etc. The exam is conducted once a year, usually in February or March, and the application process usually starts in September or October.
IIT-JAM Chemistry Question
- Which of the following statements is true for a spontaneous process?
(a) ΔG is positive
(b) ΔH is negative
(c) ΔS is negative
(d) ΔE is positive
A spontaneous process is a process that occurs without any external intervention or input of energy. In thermodynamics, the spontaneity of a process is determined by the sign of the change in Gibbs free energy (ΔG). If ΔG is negative, the process is spontaneous, and if ΔG is positive, the process is non-spontaneous.
However, the correct statement among the given options is ΔH is negative. This is because, for a spontaneous process, the change in enthalpy (ΔH) is negative, indicating that the system releases heat energy to the surroundings. This release of heat energy occurs because the system becomes more stable and its energy decreases. Therefore, option (b) is the correct answer.
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