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Which of the following statements is (ar...

Which of the following statements is (are) true ?

A

The evaporation of water is an endothermic change

B

The conversion of white phosphorus to red phosphorus is an exothermic reaction

C

The heat of neutralisation of a strong acid with a strong base is always the same

D

`Delta H` is negative for endothermic reactions

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The correct Answer is:
A, B, C
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MOTION-THERMOCHEMISTRY -Exercise - 2 (Level-II)
  1. The standard heat of formation of a compound is the :

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  2. The heat of neutralization of a strong acid by a strong base is a cons...

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  3. Which of the following statements is (are) true ?

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  4. The standard heat of formation of U(3)O(8) is -853.5 kcal mol^(-1) and...

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  5. For which of the following substances is the heat of formation in the ...

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  6. Which of the following statements is (are) true ?

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  7. The heat of combustion of ethanol was determined in a bomb calorimeter...

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  8. Heat of reaction is the change in enthalpy or internal energy as repre...

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  9. Heat of reaction is the change in enthalpy or internal energy as repre...

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  10. Heat of reaction is the change in enthalpy or internal energy as repre...

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  11. Heat of reaction is the change in enthalpy or internal energy as repre...

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  12. Heat of reaction is the change in enthalpy or internal energy as repre...

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  13. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  14. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  15. Heat of neuralisation is amount of heat evolved or absorbed when 1g- e...

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  16. Hess's law of heat of summation is based on law of conservation of ene...

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  17. Hess's law of heat of summation is based on law of conservation of ene...

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  18. Hess's law of heat of summation is based on law of conservation of ene...

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  19. Hess's law of heat of summatiion is based on law of conservation of e...

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  20. A mixture of hydrogen gas and theortical amount of air at 25^(@) C an...

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