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Test OF Knowledge

Rahul Kumar
19/04/2017 0 0

A balloon containing an ideal gas is initially kept in an evacuated and insulated room. The balloon ruptures and the gas fills up the entire room. Which one of the following statements is TRUE at the end of above process?

(A) The internal energy of the gas decreases from its initial value, but the enthalpy remains constant
(B) The internal energy of the gas increases from its initial value, but the enthalpy remains constant
(C) Both internal energy and enthalpy of the gas remain constant
(D) Both internal energy and enthalpy of the gas increase

At the end of the process, which one of the following situations will be true?

(A) superheated vapour will be left in the system
(B) no vapour will be left in the system
(C) a liquid + vapour mixture will be left in the system
(D) the mixture will exist at a dry saturated vapour state

The work done by the system during the process is:

(A) 0.1 kJ
(B) 0.2 kJ
(C) 0.3 kJ
(D) 0.4 kJ

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