Answer
Verified
37.5k+ views
Hint: "Thermodynamics" implies the flow of heat.
It deals with energy changes accompanying all types of physical and chemical processes.
There are four laws of thermodynamics that give an idea about temperature, heat, work, and entropy.
Complete Step by Step Solution:
The laws of thermodynamics are helpful in the prediction of the feasibility or spontaneity of a process.
These laws are only applicable to substances in bulk not to individual atoms or molecules.
A. First law of thermodynamics
It states that energy can neither be developed nor be eradicated but can be transformed from one form to another.
Thus, the disappearance of one form of energy leads to the appearance of an equivalent amount of energy in some other form.
This law was not formulated by Dr Nernst.
So, A is incorrect.
B. Second law of thermodynamics
It states that the entropy of the universe increases for an irreversible process.
It remains constant for a reversible process.
Natural processes are spontaneous and irreversible.
For example, water flowing downwards spontaneously. The direction of flow cannot be reversed without any external assistance.
C. Third law of thermodynamics
It states that at the absolute zero temperature, the entropy of every substance may become zero and it does become zero in the case of a perfectly crystalline solid.
In a perfect crystal, at absolute zero temperature, there is a state of perfect order which means zero entropy.
We know that entropy is defined as the degree of disorders.
This law was given by Dr. Walther Nernst.
So, C is correct.
So, option C is correct.
Note: The first and second laws of thermodynamics are based on human experience and thus have no formal proof. The third law of thermodynamics was given by Walther Nernst, a German chemist.
It deals with energy changes accompanying all types of physical and chemical processes.
There are four laws of thermodynamics that give an idea about temperature, heat, work, and entropy.
Complete Step by Step Solution:
The laws of thermodynamics are helpful in the prediction of the feasibility or spontaneity of a process.
These laws are only applicable to substances in bulk not to individual atoms or molecules.
A. First law of thermodynamics
It states that energy can neither be developed nor be eradicated but can be transformed from one form to another.
Thus, the disappearance of one form of energy leads to the appearance of an equivalent amount of energy in some other form.
This law was not formulated by Dr Nernst.
So, A is incorrect.
B. Second law of thermodynamics
It states that the entropy of the universe increases for an irreversible process.
It remains constant for a reversible process.
Natural processes are spontaneous and irreversible.
For example, water flowing downwards spontaneously. The direction of flow cannot be reversed without any external assistance.
C. Third law of thermodynamics
It states that at the absolute zero temperature, the entropy of every substance may become zero and it does become zero in the case of a perfectly crystalline solid.
In a perfect crystal, at absolute zero temperature, there is a state of perfect order which means zero entropy.
We know that entropy is defined as the degree of disorders.
This law was given by Dr. Walther Nernst.
So, C is correct.
So, option C is correct.
Note: The first and second laws of thermodynamics are based on human experience and thus have no formal proof. The third law of thermodynamics was given by Walther Nernst, a German chemist.
Recently Updated Pages
To get a maximum current in an external resistance class 1 physics JEE_Main
If a wire of resistance R is stretched to double of class 12 physics JEE_Main
Let f be a twice differentiable such that fleft x rightfleft class 11 maths JEE_Main
Find the points of intersection of the tangents at class 11 maths JEE_Main
For the two circles x2+y216 and x2+y22y0 there isare class 11 maths JEE_Main
The path difference between two waves for constructive class 11 physics JEE_MAIN
Other Pages
Choose the correct statements A A dimensionally correct class 11 physics JEE_Main
Shown below are four possible synthesis of Propionaldehyde class 12 chemistry JEE_Main
448 litres of methane at NTP corresponds to A 12times class 11 chemistry JEE_Main
Differentiate between homogeneous and heterogeneous class 12 chemistry JEE_Main
Electric field due to uniformly charged sphere class 12 physics JEE_Main
Excluding stoppages the speed of a bus is 54 kmph and class 11 maths JEE_Main