Home
Class 12
CHEMISTRY
A Carnot engine, having an efficiency of...

A Carnot engine, having an efficiency of `eta=1//10` as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

A

99 J

B

90 J

C

1 J

D

100 J

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|19 Videos

  • THERMODYNAMICS

    MOTION|Exercise EXERCISE - 3|46 Videos

  • THERMOCHEMISTRY

    MOTION|Exercise Exercise - 4 Level-II|8 Videos

Similar Questions

Explore conceptually related problems

A carnot engine, having an efficiency of eta=1//10 as heat engine, is used as a refrigerator. If the work done on the system is 10J , the amount of energy absorbed from the reservior at lower temperature is

A carnot engine having an efficiency of (1)/(5) is being used as a refrigerator. If the work done on the refrigerator is 8 J, the amount of heat absorbed from the reservoir at lower temperature is:

A carnot engine having an efficiency of 1/4 is being used as a refrigerator. If the work done on the refrigerator is 5 J, the amount of heat absorbed from the reservoir at lower temperature is:

In ta carnot engine, when heat is absorbed from the source, its temperature

A Carnot heat engine has an efficiency of 10% . If the same engine is worked backward to obtain a refrigerator, then find its coefficient of performance.

MOTION-THERMODYNAMICS-EXERCISE - 4 (LEVEL - I)
  1. Consider the reaction : N(2)+3H(2)to2NH(3) carried out at constant tem...

    Text Solution

    |

  2. The work of 146 kJ is performed in order to compress one kilo mole of ...

    Text Solution

    |

  3. An ideal gas is allowed to expand both reversibly and irreversibly in ...

    Text Solution

    |

  4. (DeltaH-DeltaU) for the formation of carbon monoxide (CO) from its ele...

    Text Solution

    |

  5. A Carnot engine, having an efficiency of eta=1//10 as heat engine, is ...

    Text Solution

    |

  6. In conversion of lime-stone to lime, CaCO(3)(s)toCaO(s)+CO(2)(g) the v...

    Text Solution

    |

  7. Assuming that water vapour is an ideal gas, the internal energy change...

    Text Solution

    |

  8. Identify the correct statement regarding a spontaneous process -

    Text Solution

    |

  9. Standard entropy of X(2),Y(2)andXY(3) are 60, 40 and 50 JK^(-1)mol^(-1...

    Text Solution

    |

  10. In a fuel cell methanol is used as fuel and oxygen gas is used as an o...

    Text Solution

    |

  11. A diatomic ideal gas is used in a Carnot engine as the working substan...

    Text Solution

    |

  12. For a particular reversible reaction at temperature T, DeltaHandDeltaS...

    Text Solution

    |

  13. The entropy change involved in the isothermal reversible expansion of ...

    Text Solution

    |

  14. In view of the signs of Delta(r)G^(@) for the following reactions : ...

    Text Solution

    |

  15. The incorrect expression among the following is -

    Text Solution

    |

  16. A piston filled with 0.04 mol of an ideal gas expands reversibly from ...

    Text Solution

    |

  17. The following reaction is performed at 298 K ? 2NO(g)+O(2)(g)hArr2NO...

    Text Solution

    |

  18. The heats of combustion of carbon and carbon monoxide are -393.5and-28...

    Text Solution

    |

  19. DeltaU is equal to:

    Text Solution

    |

  20. Given C(("graphite"))+O(2)(g)toCO(2)(g), Delta(r)H^(@)=-393.5kJmol...

    Text Solution

    |