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Can whole of heat be converted into work...

Can whole of heat be converted into work ?

Text Solution

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No, in accordance with second law of thermodynamics.
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Knowledge Check

  • An ideal gas heat engine operates in a carnot cycle between 227^@ C and 127^@ C. It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to _____

    A
    1.2
    B
    4.8
    C
    3.5
    D
    1.6

  • Assertion: In isothermal process whole of the heat energy supplied to the body is converted into internal energy. Reason: According to the first thermodynamics DeltaQ=DeltaU+PDeltaV

    A
    Both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    Both assertion and reason are true but reason is not the correct explanation of the assertion
    C
    The assertion is true but reason is false.
    D
    Assertion is false but reason is true

  • A carnot engine converts one sixth of the heat input into work. The sink temperature is reduced by 62^@ C , the efficiency of engine gets doubled. Find the source and the sink temperature.

    A
    `99^@C,37^@C`
    B
    `80^@C, 37^@C`
    C
    `95^@C, 37^@C`
    D
    `90^@C, 37^@C`

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    By which reaction phenol can be converted to O-hydroxy benzaldehyde ?

    Which of the following statements are correct ? (1) After degradation, biopolymers can be converted into life essential products (2) Non-biodegradable polymers are active towards environmental process (3) Non-biodegradable polymers can be converted into life essential products (4) PHBV undergoes bacterial degradation in environmental conditions

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