Thermodynamics Test

Result

Thermodynamics Test - 28

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following expressions defines the physical significance of free energy change ?

A
∆G = w_{(non exp)}

B
–∆G = w_{(non exp)}

C
∆G = – w_(exp.)

D
∆G = w_(exp.)
Question 2
4 / -1

Which one of the following is correct ?

A

B

C

D

Solution
Question 3
4 / -1

Which of the following relationship is correct ?

A
∆G^o = −RT ln K

B
K = e^{-∆G^o/RT}

C
K = 10^{-∆G^o/2.303 RT}

D
All are correct
Question 4
4 / -1

Which one is true ?

A
1 calorie > 1 erg > 1 Joule

B
1 erg > 1 calorie > 1 Joule

C
1 calorie > 1 Joule > 1 erg

D
1 Joule > 1 calorie > 1 erg
Question 5
4 / -1

A gas is allowed to expand under adiabatic conditions. What is zero for such a process ?

A
∆G

B
∆T

C
∆S

D
none of these

Solution
Question 6
4 / -1

A system changes from state A (P₁,V₁,T₁) to B (P₂,V₂, T₂ ) to C (P₃,V₃, T₃) and then back to A. The complete process is called

A
Reversible process

B
Cyclic process

C
Spontaneous process

D
Isobaric process
Question 7
4 / -1

Which of the following units represents largest amount of energy ?

A
Calorie

B
Joule

C
Erg

D
Electron volt

Solution
Question 8
4 / -1

A spontaneous change is one in which the system suffers

A
An increase in internal energy

B
A lowering of entropy

C
A lowering of free energy

D
No energy change
Question 9
4 / -1

Heat of neutralization of NH₄OH and HCl is

A
13.7 kcal/mole

B
<13.7 kcal/mole

C
>13.7 kcal/mole

D
zero
Question 10
4 / -1

For a reaction to be spontaneous at all temperatures

A
∆G and ∆H should be negative

B
∆H = ∆G = 0

C
∆G and ∆H should be positive

D
∆H < ∆G