Back to THERMODYNAMICS
NEET UG CHEMISTRY MCQ: THERMODYNAMICS
1
Medium
1 of 1
Analyzing
+4 | -1
A: All reactions which are exothermic are spontaneous.
R: All reactions in which entropy increases are spontaneous.
R: All reactions in which entropy increases are spontaneous.
View answer and explanation
Correct option: D
If both A and R are incorrect
Option D is correct because neither exothermic reactions are always spontaneous, nor reactions with increased entropy are always spontaneous; spontaneity depends on both enthalpy and entropy.
More Questions from THERMODYNAMICS
Practice All Chapter MCQs ā
The internal energy of one mole of a gas is:
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If is the initial temperature and is the final temperature, which of the following statements is correct?
For which of the process, āS is negative?
The work done by a weightless piston in causing an expansion āV (at constant temperature), when the opposing pressure, P is variable, is given by:
Assertion :- At constant pressure of the change work done is negative.
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is