| 1 |
Born Haber cycle is used to determine the |
- A. Lattice energy
- B. Enthalpy of formation
- C. Enthalpy of ionization
- D. Enthalpy of dissociation
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| 2 |
The optimum temperature for the synthesis of NH3 by Haber's process is. |
- A. 200 <sup>o</sup>C
- B. 300 <sup>o</sup>C
- C. 400 <sup>o</sup>C
- D. 500 <sup>o</sup>C
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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 S.I. units for the molar heat capacity are |
- A. Joule Cm<sup>-3</sup>degree<sup>-1</sup>
- B. Joule deg<sup>-1</sup>atm<sup>-1</sup>
- C. Joule deg<sup>-1</sup>mol<sup>-1</sup>
- D. Joule deg<sup>-1</sup>kg<sup>-1</sup>
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| 5 |
A material or a collection of materials which is under study is called |
- A. State function
- B. Degree and joule
- C. Degree and ergs
- D. Calorie and joule
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| 6 |
Which of the following statement is contrary to the first law of thermodynamics |
- A. An equivalent amount of heart energy can neither be created nor destroyed
- B. One form of energy can be transferred into an equivalent amount of other kinds of energy
- C. In an adiabatic process, the work done is independent of its path
- D. Continuous production of mechanical work without supplying an equivalent is amount of heat possible
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| 7 |
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
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| 8 |
Whenever a reaction is endothermic, then it means that |
- A. Heat is transferred from surrounding to the system
- B. Heat is transferred system to the surrounding
- C. Heat content of the product is greater than that of reactants
- D. Heat content of the reactants is greater than the products
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| 9 |
If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air |
- A. Remains constant
- B. Increase
- C. Decrease
- D. Increase a bit
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| 10 |
What happens to the enthalpy change when the coeffficients of a chemical equation are douubled |
- A. It doubles
- B. It becomes half
- C. It does not change
- D. It cannot be predicted
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