Thermodynamics

The effect of temperature on spontaneity of reactions are represented as : [figure] The incorrect combinations are :

1. A and C only
2. B and D only
3. A and D only
4. B and C only

A liquid when kept inside a thermally insulated closed vessel at 25 was mechanically stirred from outside. What will be the correct option for the following thermodynamic parameters ?

1. U = 0, q < 0, w > 0
2. U > 0, q = 0, w > 0
3. U = 0, q = 0, w = 0
4. U < 0, q = 0, w > 0

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R) In the light of the above statements, choose the correct answer from the options given below.

1. (A) is true but (R) is false
2. Both (A) and (R) are true and (R) is the correct explanation of (A)
3. Both (A) and (R) are true but (R) is not the correct explanation of (A)
4. (A) is false but (R) is true

Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :

1. q = 0, T = 0, w = 0
2. q = 0, T 0, w = 0
3. q 0, T = 0, w = 0
4. q = 0, T < 0, w 0

Which of the following is not correct?

1. G is positive for a spontaneous reaction
2. G is positive for a non-spontaneous reaction
3. G is zero for a reversible reaction
4. G is negative for a spontaneous reaction