Page 1 Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks CBSE TEST PAPER 02 CLASS XI CHEMISTRY (Thermodynamics) Topic : Application of Thermodynamic state Functions 1. Define enthalpy. [1] 2. Give the mathematical expression of enthalpy. [1] 3. With the help of first law of thermodynamics and H = U + pv, prove H ? = q p [2] 4. When is enthalpy change ( ) H ? - (i) positive (ii) negative. [1] 5. Why is the difference between H ? and U ? not significant for solids or liquids? [2] 6. Give the relationship between and H U ? ? for gases. [3] 7. What is an extensive and intensive property? [2] 8. Give the expression for (i) isothermal irreversible change, and (ii) isothermal reversible change. [1]Read More

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