CBSE  /  Class 11  /  Chemistry  /  Thermodynamics

  • 1. 
    In which of the following process, a maximum increase in entropy is observed?

  • Dissolution of Salt in Water
  • Condensation of Water
  • Sublimation of Naphthalene
  • Melting of Ice

  • 2. 
    The bond energy (in kcal mol

  • 1
  • 10
  • 83-85
  • 1000

  • 3. 
    Which thermodynamic function accounts automatically for enthalpy and entropy both?

  • Helmholtz Free Energy (A)
  • Internal Energy (E)
  • Work Function
  • Gibbs Free Energy

  • 4. 
    The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283.0 kJ mol-1 respectively. The enthalpy of formation of carbon monoxide is:

  • -676 kJ
  • 110.5 kJ
  • -110.5 kJ
  • 676.5 kJ

  • 5. 
    The enthalpy of formation of carbon monoxide is:

  • -676 kJ
  • 110. 5 kJ
  • -110. 5 kJ
  • 676. 5 kJ

  • 6. 
    The amount of the heat released when 20 ml 0. 5 M NaOH is mixed with 100 ml 0. 1 M HCl is x kJ. The heat of neutralization is

  • -100 × kJ/mol
  • -50 × kJ/mol
  • 100 × KJ/mol
  • 50 × kJ/mol

  • 7. 
    Based on the first law of thermodynamics, which one of the following is correct?

  • For an isothermal process, q = +w
  • For an isochoric process, ΔU = -q
  • For an adiabatic process, ΔU = -w
  • For a cyclic process, q = -w

  • 8. 
    A system absorb 10 kJ of heat at constant volume and its temperature rises from 270°C to 370°C. The value of ∆ U is

  • 100 kJ
  • 10 kJ
  • 0 kJ
  • 1 kJ

  • 9. 
    The temperature of the system decreases in an ______.

  • Adiabatic Compression
  • Isothermal Expansion
  • Isothermal Compression
  • Adiabatic Expansion

  • 10. 
    Which of the following salts will have maximum cooling effect when 0. 5 mole of the salt is dissolved in same amount of water. Integral heat of solution at 298 K is given for each salt?

  • KNO
  • NaCl (∆H = 5. 35 kJ mol
  • HBr (∆H = -83. 3 kJ mol
  • KOH ( ∆H = -55. 6 kJ mol
Report Question
warning
Practice More On Thermodynamics
Quiz 1 Quiz 2 Quiz 3
access_time
  Time