Home
Class 12
CHEMISTRY
Assertion(A) : For the combustion reacti...

Assertion(A) : For the combustion reactions, the value of `DeltaH` is always negative.
Reason(R ) : The combustion reactions are always endothermic.

A

Both `A`and `R` are true and `R` is the correct explantion of `A`

B

Both `A`and `R` are true and `R` is not a correct explantion of `A`

C

`A` is true but `R` is false

D

`A` is false but `R` is true

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos
  • CHEMISTRY IN EVERY DAY LIFE

    DINESH PUBLICATION|Exercise Unit test-9|50 Videos

Similar Questions

Explore conceptually related problems

In an endothermic reaction, the value of DeltaH is

All combustion reactions are………………. .

DeltaH is negative for the reaction

Assertion : Enthalpy of combustion is always negative Reason : Combustion reactions proceeds with evolution of heat.

All combustion reactions are ...........

The following is not a combustion reaction

Assertion :- For the combustion of methane DeltaHltDeltaU at 125^(@) Reason :- For combustion DeltaH is always less than DeltaU

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. Assertion(A) : The mass and volume of a substance are the extensive pr...

    Text Solution

    |

  2. Assertion (A): Enthalpy of graphite is lower than that of diamond. R...

    Text Solution

    |

  3. Assertion(A) : For the combustion reactions, the value of DeltaH is al...

    Text Solution

    |

  4. Assertion(A) : The value of enthalpy of neutralization of a weak acid ...

    Text Solution

    |

  5. Statement-1 : Many endothermic reactions that are not spontaneous at r...

    Text Solution

    |

  6. Assertion(A) : Helium has lower entropy than CO(2) gas which has lower...

    Text Solution

    |

  7. Assertion: The enthalpy of formation of gaseous oxygen molecules at 29...

    Text Solution

    |

  8. Assertion(A) : Heat of vaporisation is always endothermic. Reason(R ...

    Text Solution

    |

  9. Assertion(A) : Endothermic compounds are stable than the exothermic co...

    Text Solution

    |

  10. Assertion(A) : q is a state function. Reason(R ) : q is a path funct...

    Text Solution

    |

  11. Assertion(A) : Heat of neutralisation is always less than zero. Reas...

    Text Solution

    |

  12. Assertion(A) : Absolute value of H cannot be determined. Reason(R ) ...

    Text Solution

    |

  13. Assertion(A) : Heat of neutralisation of HCl and NaOH is same as that ...

    Text Solution

    |

  14. Assertion (A): The dissolution of gases in water is always an endother...

    Text Solution

    |

  15. Assertion(A) : The enthalpy of formation of O(2) at 1 atmospheric pres...

    Text Solution

    |

  16. Assertion(A) : Two systems which are both in thermal equilibrium with ...

    Text Solution

    |

  17. Assertion(A) : The value of enthalpy of neutralisation of strong acid ...

    Text Solution

    |

  18. Assertion(A) : Standard entropy of O(2) gas is gt 0. Reason(R ) : En...

    Text Solution

    |

  19. Assertion(A) : Decrease of free energy during the process under partic...

    Text Solution

    |

  20. Assertion:Absolute values of intenal energy of substances cannot be d...

    Text Solution

    |