| 1 |
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
|
| 2 |
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
|
| 3 |
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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| 4 |
Standard enthalpy of combustion of carbon is -394 kJ mol-1 than, which is the standard enthalpy of formation of CO2 |
- A. +394 kJ
- B. -394 kJ
- C. 0 kJ
- D. +197 kJ
|
| 5 |
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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| 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
|
| 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 |
Which is not is state function |
- A. Enthalpy
- B. Entropy
- C. Pressure
- D. work
|
| 9 |
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
|
| 10 |
Calorie is equivalent to |
- A. 0.4184 J
- B. 41.84 J
- C. 4.184 J
- D. 418.4 J
|