Basic Chemical Engineering Practice Test 7

1. Which of the following is an intensive property?

2. A piston cylinder expands with some pressure, what is the work done by the system?

3. C_p of ice is 25 J/^oC and that of water is 30 J/^oC, what is the enthalpy change of water from – 10^oC to 35^oC at standard conditions, if the later heat of fusion of water is 110 J?

4. What is the change in potential energy of a stone of mass 1 Kg thrown up with a velocity 10 m/s and comes down?

5. What separates the system and surroundings?

6. If C_p of water is (23 + T) J/^oC, what is the enthalpy change of water from 3^oC to 5^oC?

7. Ice having C_P = 15 J/^oC, is heated from -10^oC to -4^oC, what is the enthalpy change?

8. Q amount of heat is transferred in an adiabatic process, which of the following is correct?

9. An object moved forward 10 meters and then comes back 5 meter all with a constant force of 5 N, what is the work done by the force?

10. C_p of water is 10 J/^oC and that of steam is 15 J/^oC, what is the enthalpy change of water from 75^oC to 110^oC at standard conditions, if the later heat of vaporization of water is 245 J?