Kelvin-plank law deals with

Kelvin-plank law deals with Correct Answer Conversion of heat into work

Explanation:

Kelvin-Plank gives the concept of heat engine hence, it is a conversion of heat into work.

Kelvin-Plank statement of Second law of Thermodynamics:

“It is impossible to construct a device (engine) operating in a cycle that will produce no effect other than extraction of heat from a single reservoir and convert all of it into work.”

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Clausius statement of Second law of Thermodynamics: 

It is impossible to construct a system which will operate in a cycle, transfers heat from the low-temperature reservoir (or object) to the high-temperature reservoir (or object) without any external effect or work interaction with the surrounding.

Related Questions

Read Assertion (A) and Reason (R) and give correct answer by using code below:
Assertion (A): Administrative law is a branch of public law in contradiction to Private law.
Reason (R): Administrative law primarily deals with the relationship of individuals inter se.