Home
Class 12
CHEMISTRY
A heat engine absorbs heat Q(1) at tempe...

A heat engine absorbs heat `Q_(1)` at temperature `T_(1)` and `Q_(2)` at temperature `T_(2)` . Work done by the engine is `(Q_(1)+Q_(2))` . This data:

A

violates `1^(st)` law of thermodynamics

B

violates `1^(st)` law of thermodynamics if `Q_1` is `-ve`

C

violates `1^(st)` law of thermodynamics of `Q_2 is -ve`

D

does not violate `1^(st)` law of thermodynamics

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|25 Videos

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise CRITICAL THINKING|95 Videos

  • CHEMICAL KINETICS

    TARGET PUBLICATION|Exercise Evaluation test|13 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    TARGET PUBLICATION|Exercise 7|3 Videos

Similar Questions

Explore conceptually related problems

A heat engine absorbs heat Q_(1) at temperature T_(1) and Q_(2) at temperature T_(2) . Work done by the engine is (Q_(1)+Q_(1)) . This data:

A heat engine absorbs 300J of heat at 627^(@)C and rejects a part of it at 27^(@)C . Find the work done by the engine.

Two ideal Carnot engines operate in cascade (all heat given up by one engine is used by the other engine to produce work) between temperatures, T_(1) and T_(2) . The temperature of the hot reservoir of the first engine is T_(1) and the temperature of the cold reservoir of the second engine is T_(2) . T is temperature of the sink of first engine which is also the source for the second engine. How is T related to T_(1) and T_(2) , if both the engines perform equal amount of work?

Efficiency of carnot heat engine,if source temperature is T1K and sink temperature is T2K

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T_1 and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T_(2) . For what value of T the efficiencies of the two engines are equal?

TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -COMPETITIVE THINKING
  1. Adsorpton of gases on solid surface is generally exothermic because :

    Text Solution

    |

  2. Ice and water are at equilibrium at 0^@C , DeltaH=4 kJ/mol for the pro...

    Text Solution

    |

  3. Which of the following statements of correct for the spontaneous adsop...

    Text Solution

    |

  4. The correct thermodnamic conditions for the spontaneous reaction at al...

    Text Solution

    |

  5. An endotthermic reaction is non-spontaneous at freezing point of water...

    Text Solution

    |

  6. The standard enthalpy or the decomposition of N2 O5 to NO2 is 58.04 kJ...

    Text Solution

    |

  7. For the reaction Ag(2)O(s)rarr 2Ag(s)+1//2O(2)(g) the value of Delta H...

    Text Solution

    |

  8. At what temperature, a reaction will be at equilibrium at 1 atm if Del...

    Text Solution

    |

  9. The values of DeltaH and Delta S of a certain reaction are -400 kJ mol...

    Text Solution

    |

  10. Which of the following statements is correct for a reversible process ...

    Text Solution

    |

  11. If K gt 1.0, then the value of DeltaG^@ will be .

    Text Solution

    |

  12. Using the Gibbs energy change, Delta G^(@)=+ 63.3 kJ, for the followin...

    Text Solution

    |

  13. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1 cal , DeltaS...

    Text Solution

    |

  14. Entropy of a perfect crystalline solid at absolute zero is

    Text Solution

    |

  15. Which law of thermodynamics helps in calculating the absolute entropie...

    Text Solution

    |

  16. A heat engine absorbs heat Q(1) at temperature T(1) and Q(2) at temper...

    Text Solution

    |

  17. What is the free energy change in dissolving one mole of NaCl with its...

    Text Solution

    |

  18. For the reaction X2 Y(4(l)) to 2XY(2(g)) at 300 K the values of DeltaU...

    Text Solution

    |

  19. The heats of vaporization of H2 O, C2 H5 OH "and" CS2 "are 40.6 kJ" mo...

    Text Solution

    |

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

    Text Solution

    |