Can whole of heat be converted into work?

Can the whole of heat be converted into work ?

Can whole of work be converted into heat?

Can whole of work be converted into heat? Is the reverse true?

Can the whole of work be converted into heat ?

Write one process where work is converted into heat and heat is converted into work.

According to second law of thermodynamics a)All heat can be converted into work b) The efficiency of a heat engine is always lesser than unity c) It is not possible to transfer heat from lower to higher temperature by it self

Assertion: In an isothermal proces, whole of heat energy supplied to the body id converted into work. Reason: According to first law of thermodynamics DeltaQ=DeltaU+PDeltaV

A given amount of heat cannot be completely converted into work. However it is possible to convert a given amount of work Completely into heat this apparently contradictory statement results from the