| 1 |
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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| 2 |
Most of the reaction which give stable products are |
- A. Exothermic
- B. Endothermic
- C. Isothermal
- D. None of these
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| 3 |
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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| 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
|
| 5 |
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
|
| 6 |
Calorie is equivalent to |
- A. 0.4184 J
- B. 41.84 J
- C. 4.184 J
- D. 418.4 J
|
| 7 |
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
|
| 8 |
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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| 9 |
The pressure of oxygen inside the bomb calorimeter is. |
- A. 100 atm
- B. 50 atm
- C. 25 atm
- D. 20 atm
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| 10 |
Which one of the following enthalpies is always an exothermic process. |
- A. Enthalpy of atomization
- B. Enthalpy of neutralization
- C. Enthalpy of ionization
- D. Enthalpy of dissociation
|