MEDIUM
JEE Main/Advance
IMPORTANT
Earn 100

At 1 atm pressure n mole of water 0°C is frozen to ice 0°C then heat transfer is:

58.33% studentsanswered this correctly

Important Questions on Thermodynamics

MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 87
The entropy of a gas increases on its expansion. Why?
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 88
Entropy of the solutions is higher than that of pure liquid. Why?
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 89
What are the signs of ΔS for the system and for the surrounding in each of the following processes?
(a) Water boils in a tea kettle on a hot stove.
(b) Ice in an ice cube tray, left on table melts.
(c) A cup of coffee is reheated in a microwave oven.
EASY
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 90
State the second law of thermodynamics.
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 91
Write statement for the IIIrd law of thermodynamics:
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 92
State the thermodynamic conditions of spontaneous occurrence of the processes.
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 93
If ΔH for a reaction has a positive value, how would you know the sign requirement of ΔS for it so that the reaction is spontaneous?
MEDIUM
JEE Main/Advance
IMPORTANT
Alpha Question Bank for Engineering: Chemistry>Chapter 4 - Thermodynamics>Exercise-1>Q 94
The entropy of vaporization of benzene is 85 J K-1 mol-1. When 117 g benzene vaporizes at its normal boiling point, calculate the entropy change of surrounding.