| 1 |
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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| 2 |
In endothermic reactions, the heat content of the |
- A. Products is more then that of reactants
- B. Reactants is more than that of products
- C. Both a and b
- D. Reactant and products is equal
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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 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
|
| 5 |
Spontaneous processes are mostly |
- A. Reversible
- B. Irreversible
- C. Not irreversible
- D. None of these
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| 6 |
Which of the following value of heat of formation indicates that the product is least stable. |
- A. -94 KJ
- B. -231.6 KJ
- C. +21.4 KJ
- D. +70 KJ
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| 7 |
The net heat change in a chemical reaction is same whether it is brought about in two or more different ways in one or several steps. It is known as |
- A. Henry's law
- B. Hess's law
- C. Joule's principle
- D. Law of conservation of energy
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| 8 |
Calorie is equivalent to |
- A. 0.4184 J
- B. 41.84 J
- C. 4.184 J
- D. 418.4 J
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| 9 |
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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| 10 |
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
|