Tuesday, January 8, 2019

Physical chemistry quiz

Q.1 In order to increase the volume of a gas by 10%, the pressure of the gas should be
      A. increased by 10 %
      B. increased by 1 %
      C. decreased by 10 %
      D. decreased by 1 %
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Answer:-C
Explanation:-Boyle measured the volumes of gases at different pressures. Boyle found that when the pressure of gas at a constant temperature is increased, the volume of the gas decreases. when the pressure of gas is decreased, the volume increases. this relationship between pressure and volume is called Boyle's law
.
Q.2 Which one of the following is not a perfect differential ?
       A.dG
       B.dT
       C.dQ
       D.dH
Answer:-C
Explanation:-dU, dG, dH etc are all exact differentials and the variables themselves are known as state functions because they only depend on the state of the system. However, dq and dw for example, are inexact differentials. Exact differentials are not dependent on the path but inexact differentials are.

Q.3 Reverse Osmosis is an example of
      A.Reversible process
      B.Irreversible process
      C.Equilibrium process
      D.Non-spontaneous process
Answer:-D

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