JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank

done Basic concepts Total Questions - 28

• question_answer1)
  Internal energy of an ideal gas depends on
  A)
                  Volume   done clear
  B)
                  Temperature done clear
  C)
                  Pressure done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer2)
  Any series of operations so carried out that at the end, the system is back to its initial state is called
  A)
                  Boyle's cycle           done clear
  B)
                  Reversible process done clear
  C)
                  Adiabatic process   done clear
  D)
                  Cyclic process done clear
  View Solution play_arrow

• question_answer3)
  One calorie is equal to           [CPMT 1988]
  A)
                  0.4184  Joule           done clear
  B)
                  4.184  Joule done clear
  C)
                  41.84  Joule             done clear
  D)
                  418.4  Joule done clear
  View Solution play_arrow

• question_answer4)
  The total internal energy change for a reversible isothermal cycles is
  A)
                  Always 100 calories per degree done clear
  B)
                  Always negative done clear
  C)
                  0 done clear
  D)
                  Always positive done clear
  View Solution play_arrow

• question_answer5)
  A well stoppered thermos flask contains some ice cubes. This is an example of a             [AIIMS 1992]
  A)
                  Closed system done clear
  B)
                  Open system done clear
  C)
                  Isolated system done clear
  D)
                  Non-thermodynamic system done clear
  View Solution play_arrow

• question_answer6)
  Identify the intensive quantity from the following [IIT JEE 1993]
  A)
                  Enthalpy and temperature done clear
  B)
                  Volume and temperature done clear
  C)
                  Enthalpy and volume done clear
  D)
                  Temperature and refractive index done clear
  View Solution play_arrow

• question_answer7)
  Which of the following units represents the largest amount of energy               [CPMT 1989; MP PET 2000]
  A)
                  Electron volt            done clear
  B)
                  Erg done clear
  C)
                  Joule        done clear
  D)
                  Calorie done clear
  View Solution play_arrow

• question_answer8)
  Energy equivalent to one erg, one joule and one calorie is in the order               [NCERT 1980; CPMT 1997]
  A)
                  \[1\,erg\,>\,1\,joule\,>\,1\,calorie\]     done clear
  B)
                  \[1\,erg\,>\,1\,calorie\,>\,1\,joule\] done clear
  C)
                  \[1\,calorie\,>\,1\,joule\,>\,1\,erg\]     done clear
  D)
                  \[1\,joule\,>\,1\,calorie\,>\,1\,erg\] done clear
  View Solution play_arrow

• question_answer9)
  Heat produced in calories by the combustion of one gram of carbon is called
  A)
                  Heat of combustion of carbon done clear
  B)
                  Heat of formation of carbon done clear
  C)
                  Calorific value of carbon done clear
  D)
                  Heat of production of carbon done clear
  View Solution play_arrow

• question_answer10)
  Conditions of standard state used in thermochemistry is
  A)
                  \[{{0}^{o}}C\] and 1 atm               done clear
  B)
                  \[{{20}^{o}}C\] and 1 atm done clear
  C)
                  \[{{25}^{o}}C\] and 1 atm             done clear
  D)
                  \[0\,K\] and 1 atm done clear
  View Solution play_arrow

• question_answer11)
  The temperature of the system decreases in an                [KCET 2005]
  A)
                  Adiabatic compression  done clear
  B)
                  Isothermal compression done clear
  C)
                  Isothermal expansion    done clear
  D)
                  Adiabatic expansion done clear
  View Solution play_arrow

• question_answer12)
  For the isothermal expansion of an ideal gas
  A)
                  E and H increases done clear
  B)
                  E increases but H decreases done clear
  C)
                  H increases but E decreases done clear
  D)
                  E and H are unaltered done clear
  View Solution play_arrow

• question_answer13)
  If a refrigerator's door is opened, then we get [CPMT 1980]
  A)
                  Room heated done clear
  B)
                  Room cooled done clear
  C)
                  More amount of heat is passed out done clear
  D)
                  No effect on room done clear
  View Solution play_arrow

• question_answer14)
  The cooling in refrigerator is due to         [KCET 2005]
  A)
                  Reaction of the refrigerator gas done clear
  B)
                  Expansion of ice done clear
  C)
                  The expansion of the gas in the refrigerator done clear
  D)
                  The work of the compressor done clear
  View Solution play_arrow

• question_answer15)
  Point out the wrong statement in relation to enthalpy
  A)
                  It is a state function done clear
  B)
                  It is an intensive property done clear
  C)
                  It is independent of the path followed for the change done clear
  D)
                  Its value depends upon the amount of substance in the system done clear
  View Solution play_arrow

• question_answer16)
  Which of the following is zero for an isochoric process
  A)
                  \[dP\]   done clear
  B)
                  \[dV\] done clear
  C)
                  \[dT\]    done clear
  D)
                  \[dE\] done clear
  View Solution play_arrow

• question_answer17)
  Mark the correct statement        [MP PET 1997]
  A)
                  For a chemical reaction to be feasible, \[\Delta G\] should be zero done clear
  B)
                  Entropy is a measure of order in a system done clear
  C)
                  For a chemical reaction to be feasible, \[\Delta G\] should be positive done clear
  D)
                  The total energy of an isolated system is constant done clear
  View Solution play_arrow

• question_answer18)
  In an isochoric process the increase in internal energy is [MP PMT 1997]
  A)
                  Equal to the heat absorbed done clear
  B)
                  Equal to the heat evolved done clear
  C)
                  Equal to the work done done clear
  D)
                  Equal to the sum of the heat absorbed and work done done clear
  View Solution play_arrow

• question_answer19)
  It is general principle that the less energy a system contains, it is               [MH CET 1999]
  A)
                  Less stable          done clear
  B)
                  More stable done clear
  C)
                  Unstable              done clear
  D)
                  More unstable done clear
  View Solution play_arrow

• question_answer20)
  Internal energy is an example of               [Pb. PMT 2000]
  A)
                  Path function     done clear
  B)
                  State function done clear
  C)
                  Both A and B      done clear
  D)
                  None of these done clear
  View Solution play_arrow

• question_answer21)
  The process, in which no heat enters or leaves the system, is termed as                [Pb. PMT 1999; Kerala (Med.) 2002; J & K 2005]
  A)
                  Isochoric              done clear
  B)
                  Isobaric done clear
  C)
                  Isothermal          done clear
  D)
                  Adiabatic done clear
  View Solution play_arrow

• question_answer22)
  The intensive property among these quantities is [KCET 2002]
  A)
                  Enthalpy              done clear
  B)
                  Mass/volume done clear
  C)
                  Mass     done clear
  D)
                  Volume done clear
  View Solution play_arrow

• question_answer23)
  In thermodynamics which one of the following is not an intensive property         [Kerala (Med.) 2002]
  A)
                  Pressure              done clear
  B)
                  Density done clear
  C)
                  Volume                done clear
  D)
                  Temperature done clear
  View Solution play_arrow

• question_answer24)
  If in a container neither mass and nor heat exchange occurs then it constitutes a              [MP PMT 1993; AFMC 2003]
  A)
                  Closed system   done clear
  B)
                  Open system done clear
  C)
                  Isolated system                done clear
  D)
                  Imaginary system done clear
  View Solution play_arrow

• question_answer25)
  Which of the following is not a state function      [DCE 2002]
  A)
                  \[\Delta S\]         done clear
  B)
                  \[\Delta G\] done clear
  C)
                  \[\Delta H\]        done clear
  D)
                  \[\Delta Q\] done clear
  View Solution play_arrow

• question_answer26)
  Which of the following is true for an adiabatic process [DCE 2002; MP PET 1995, 98, 2004; CPMT 1990; MP PMT 1998, 2002]
  A)
                  \[\Delta H=0\]   done clear
  B)
                  \[\Delta W=0\] done clear
  C)
                  \[\Delta Q=0\]   done clear
  D)
                  \[\Delta V=0\] done clear
  View Solution play_arrow

• question_answer27)
  Which of the following is not a state function [MH CET 2004; AIIMS 2001]
  A)
                  Internal energy done clear
  B)
                  Enthalpy done clear
  C)
                  Work     done clear
  D)
                  Entropy done clear
  View Solution play_arrow

• question_answer28)
  Among them intensive property is           [AFMC 2004]
  A)
                  Mass     done clear
  B)
                  Volume done clear
  C)
                  Surface tension done clear
  D)
                  Enthalpy done clear
  View Solution play_arrow