MCQs on Chemical Energetics

Dear students, today we will test our knowledge on chemical energetics with this MCQ quiz on energetics chemical. This includes energy changes during chemical reactions, endothermic and exothermic reactions etc. Let's solve this energetics chemical quiz. 

Science Quiz by www.ChemistryNotesInfo.com

MCQ-1.  An isolated system is that system in which:

  there is no exchange of energy with the surroundings

  there is exchange of mass and energy with the surrounding

  there is no exchange of mass and energy with the surroundings

  there is exchange of mass with surroundings

MCQ-2.  According to first law of thermodynamics:

  ∆E = Q + W

  ∆E = W - Q

  W = Q + ∆E

  None of these

MCQ-3.  The amount of heat measured for a reaction in a bomb calorimeter is:

  ∆G

  ∆H

  ∆E

  P∆V

MCQ-4.  Which of the following values of heat of formation indicates that the product is least stable?

  -94 kcal

  -231.6 kcal

  +21.4 kcal

  +64.8 kcal

MCQ-5.  Heat of combustion of acetylene is:

  +228 kJ

  -228 kJ

  +100 kJ

  -100 kJ

MCQ-6.  which of the following fuels will have the highest calorific value (kJ / kg)?

  Charcoal

  Kerosene

  Wood

  Dung

MCQ-7.  Mechanical work is especially important in systems that contain:

  solid - liquid

  liquid - liquid

  solid - solid

  gases

MCQ-8.  Heat of combustion is always:

  positive

  negative

  neutral

  all of the above

MCQ-9.  Two moles of an ideal gas expand spontaneously into a vacuum. The work done is:

  2 J

  4 J

  Infinity

  Zero

MCQ-10.  The value of free energy change at equilibrium is:

  positive

  negative

  zero

  not definite