| 1 |
Which is not is state function |
- A. Enthalpy
- B. Entropy
- C. Pressure
- D. work
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| 2 |
At constant volume of a system remains constant and the heat is absorbed by the system, them amount of heat absorbed is called |
- A. Enthaply change of the system
- B. Internal energy change of the system
- C. Total enthalphy of the system
- D. Total internal energy of the system
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| 3 |
For a given process, the heat change at constant pressure (q<sub>p</sub>) and at constant volume (q<sub>v</sub>) are related to each other as |
- A. q<sub>p</sub>= q<sub>v</sub>
- B. q<sub>p</sub>< q<sub>v</sub>
- C. q<sub>p</sub>> q<sub>v</sub>
- D. q<sub>p</sub>= q<sub>v</sub>/2
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| 4 |
The standard heat of formation is measured at 1 atmosphere and |
- A. 0 <sup>o</sup>C
- B. 100 <sup>o</sup>C
- C. 293 <sup>o</sup>C
- D. 25 <sup>o</sup>C
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| 5 |
The born Haber cycle is the best application of law. |
- A. Boyle's
- B. Dalton's
- C. Hess's
- D. Graham's
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| 6 |
The change in heat energy of a chemical reaction at constant temperature and pressure is called. |
- A. Enthalpy change
- B. Bond energy
- C. Heat of sublimation
- D. Internal energy change
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| 7 |
A chemical change always involve |
- A. Absorption of heat
- B. Evolution of heat
- C. Either absorption or evolution of heat
- D. The liberation of heat and light energy
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| 8 |
One of the following statements about Born-Haber cycle is correct. Which is that statement |
- A. Born-Haber cycle is different from Hess's law
- B. The energy change in a cyclic process is not zero
- C. The lattice energy of the crystalline substances can be calculated easily
- D. Heat of formation of the product and the lattice energy of the substance can be calculated simultaneously
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| 9 |
If an endothermic reaction is allowed to take place very rapidly i the air, the temperature fo the surrounding air. |
- A. Remains constant
- B. Increase
- C. Decrease
- D. Remain unchanged
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| 10 |
Standard enthalpy change when one mole of compound is formed from their elements at standard state is. |
- A. Heat of formation
- B. Standard heat of formation
- C. Heat of combustion
- D. Standard Heat of neutralization
|