PHY107 - Multiple Choice Kinetics and Thermodynamics

PHY107 - Multiple Choice Kinetics and Thermodynamics - APB...

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APB – Multiple Choice Practice Questions Heat Kinetics and Thermodynamics 1) Which of the following could NOT be used to indicate a temperature change? A change in: A) color of a metal rod B) length of a liquid column C) pressure of a gas at constant volume D) electrical resistance E) mass of one mole of gas at constant pressure 2) A mass m of helium gas is in a container of constant volume V. It is initially at pressure p and absolute (Kelvin) temperature T. Additional Helium is added, bringing the total mass of helium gas to 3m. After this addition, the temperature is found to be 2T. What is the gas pressure? A) 2/3 p B) 3/2 p C) 2 p D) 3 p E) 6 p 3) A gas can be taken from state a to state c by two different reversible processes, a à c or a à b à c. During the direct process a à c, 20 J of work are done by the system and 30 J of heat are added to the system. During the process a à b à c, 25 J of heat are added to the system. How much work is done by the system during a à b à c? A) 5 J B) 10 J C) 15 J D) 20 J E) 25 J 4) What temperature change on the Kelvin scale is equivalent to a 10 degree change on the Celsius scale A) 283 K B) 273 K C) 18 K D) 10 K E) 0 K
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5) Which would be the most comfortable temperature for your bath water? A) 0 C B) 40 K C) 110 C D) 310 K E) 560 K 6) The theoretical (Carnot) efficiency of a heat engine operating between 600C and 100C is A) 16.7 % B) 20.0 % C) 42.7 % D) 57.3 % E) 83.3 % 7) When an ideal gas is isothermally compressed A) thermal energy flows from the gas to the atmosphere B) the temperature of the gas decreases C) no thermal energy enters or leaves the gas D) the temperature of the gas increases E) thermal energy flows from the surroundings to the gas 8) Which of the following is always true for an isothermal process of an ideal gas? A) The internal energy does not change B) No heat flows into or out of the system C) The pressure does not change D) The volume does not change E) No work is done by or on the system 9) The average speed of the atoms of a gas a
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This note was uploaded on 10/10/2010 for the course PHY 107 taught by Professor Han during the Spring '08 term at SUNY Buffalo.

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PHY107 - Multiple Choice Kinetics and Thermodynamics - APB...

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