Background and Fundamentals MCQ

Test your knowledge with important Background and Fundamentals MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Background and Fundamentals MCQs at Bissoy

• What is the energy released (or absorbed), or the enthalpy change when one mole of a chemical compound is formed from its constituent atoms or elements at one bar and isothermally at 25°C?
  ক

  Heat of formation

  খ

  Heat of reaction
• The decomposition of solid propellants to reaction mixture is a(n) ______________ chemical reaction.
  ক

  reversible

  খ

  irreversible

  গ

  stoichiometric

  ঘ

  ideal
• Rocket propulsion usually operates in ___________ mixture ratio.
  ক

  fuel rich

  খ

  oxidizer rich

  গ

  stoichiometric

  ঘ

  any
• Determine the stoichiometric mixture mass ratio for the complete reaction: H2 + 1/2 O2 → H2O.
  ক

  2:1

  খ

  16:1

  গ

  4:1

  ঘ

  8:1
• What is the number of condensed species in a gaseous mixture, if there are 8 possible species which enter into a relationship and out of these, only 5 are gases?
  ক

  3

  খ

  2

  গ

  9

  ঘ

  6
• In a gaseous mixture, the number of moles and the molecular mass (in their respective units) of each component is given as follows: nA = 1, MA = 23; nB = 2, MB = 48; nC = 3, MC = 19. Find the average molecular mass of the mixture.
  ক

  28.67

  খ

  29.33

  গ

  31.25

  ঘ

  25.47
• Consider two sets of mixture of gases X and Y having the same total temperature of the mixture and having total pressures PX and PY respectively. If PX = 1.4 PY and molecular mass of A MX = 2.3 x MY, determine the ratio of Vmix_X/Vmix_Y.
  ক

  0.26

  খ

  0.52

  গ

  0.62

  ঘ

  0.31
• Consider two sets of mixture of gases A and B having the same specific volume of the mixture and having total pressures PA and PB respectively. If TA = 3TB and molecular mass of A MA = 1/2 MB, determine the ratio of PA/PB.
  ক

  0.75

  খ

  12

  গ

  1.5

  ঘ

  6
• Perfect gas equation applies very closely to ________ gases.
  ক

  low temperature, low pressure

  খ

  high temperature, high pressure

  গ

  high temperature, low pressure

  ঘ

  low temperature, high pressure
• Consider a mixture of three gases a, b and c at equilibrium. If the individual gas components have pressures equal to Pa, Pb and Pc, determine the total pressure P of the mixture of gases. / (Pa + Pb + Pc) d) P = (Pa x Pb / Pc) + (Pb x Pc / P
  ক

  P = Pa + Pb + Pc / (Pa + Pb + Pc) d) P = (Pa x Pb / Pc) + (Pb x Pc / P] + (Pc x Pa / P

  খ

  P = Pa x Pb x Pc /(Pa + Pb + P

  গ

  [ P = [(Pa x Pb) + (Pb x P[ + (Pc x Pa)

  ঘ

  (Pa x Pb) + (Pb x Pc) + (Pc x Pa)