Stoichiometry MCQ

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

• For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)
  ক

  Δ H

  খ

  >ΔH

  গ

  0
• The value of (C_p - C_v) for a real gas obeying Vander Wall's equation is
  ক

  R

  খ

  > R

  গ

  0.5 R
• 1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is
  ক

  C₄H₉OH

  খ

  C₃H₂₁OH

  গ

  (C₂H₄)₂H₂.OH

  ঘ

  C₂H₃₃OH
• 1 BTU/ft³ is approximately equal to __________ kcal/m³.
  ক

  1

  খ

  9

  গ

  4

  ঘ

  252
• Which of the following is not a unit of length?
  ক

  Parsec

  খ

  Angstrom

  গ

  Barn

  ঘ

  Fermi
• The increase in the temperature of the aqueous solution will result in decrease of its
  ক

  Weight % of the solute

  খ

  Mole fraction of the solute

  গ

  Molarity

  ঘ

  Molality
• Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.
  ক

  57.46

  খ

  -57.46

  গ

  114.92

  ঘ

  -28.73
• Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be __________ atmosphere.
  ক

  0.5

  খ

  1

  গ

  1.5

  ঘ

  2
• Colligative properties of a dilute solution are those which depend entirely upon the
  ক

  Constitution of the solute

  খ

  Chemical composition of the solute

  গ

  Number of solute molecules contained in a given volume of the solvent

  ঘ

  None of these
• Colligative properties of a dilute solution are those, which depend entirely upon the
  ক

  Chemical composition of the solute

  খ

  Constitution of the solute

  গ

  Number of solute molecules contained in a given volume of the solvent

  ঘ

  None of these
• A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO₂, 0.05 gm mole of oxygen and 0.80 gm mole of N₂. What is its molecular weight?
  ক

  28.6

  খ

  30.0

  গ

  30.6

  ঘ

  32.6
• Pick out the wrong unit conversion of heat transfer rate.
  ক

  1 kcal/hr = 1.163 Watt

  খ

  1 Watt = 1.163 kcal/hr

  গ

  1 BTU/ft².hr = 2.712 kcal/m².hr

  ঘ

  1 kcal/m².hr = 0.3687 BTU/ft².hr = 1.163 Watt/m²
• Vapor pressure of a solution is proportional to (where, S_v and S_t are mole fraction of solvent and solute respectively).
  ক

  S_v

  খ

  $$\frac{1}{{{{\text{S}}_{\text{t}}}}}$$

  গ

  S_t

  ঘ

  $$\frac{1}{{{{\text{S}}_{\text{v}}}}}$$
• For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
  ক

  Dry bulb temperature

  খ

  Wet bulb temperature

  গ

  Humidity

  ঘ

  Relative saturation
• Unit of power is
  ক

  Joule

  খ

  Watt

  গ

  Joule/Second

  ঘ

  Both B & C
• The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation
  ক

  Increases with pressure rise

  খ

  Decreases with increasing pressure

  গ

  Becomes zero at the critical point

  ঘ

  Both B & C
• Kinematic viscosity of 1 m²/second is equivalent to __________ stokes.
  ক

  10

  খ

  10²

  গ

  10³

  ঘ

  10⁴
• Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the
  ক

  Vapor follows the ideal gas law

  খ

  Molal latent heat of vaporisation is constant within the limited temperature range

  গ

  Volume in the liquid state is negligible compared with that in the vapor state

  ঘ

  All of the above
• Enthalpy of formation of NH₃ is -46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole.
  ক

  46

  খ

  92

  গ

  -23

  ঘ

  -92
• °API gravity of water at N.T.P. is about
  ক

  0

  খ

  1

  গ

  10

  ঘ

  100
• 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be __________ mm Hg.
  ক

  650

  খ

  700

  গ

  600

  ঘ

  375
• Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the
  ক

  Temperature

  খ

  Volume of solution

  গ

  Moles of non-volatile solute

  ঘ

  None of these
• Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces?
  ক

  RT

  খ

  $${\text{p}} + \frac{{\text{a}}}{{{{\text{V}}^2}}}$$

  গ

  V - b

  ঘ

  $$\frac{1}{{{\text{RT}}}}$$
• 1 kg/m² is equal to __________ mm water column.
  ক

  1

  খ

  10

  গ

  100

  ঘ

  1000
• The hydroxyl ion (OH^-) concentration in a solution having pH value 3 will be
  ক

  10^-11

  খ

  10^-10

  গ

  10^-3

  ঘ

  10^-4
• An aqueous solution of 2.45% by weight H₂SO₄ has a specific gravity of 1.011. The composition expressed in normality is
  ক

  0.2500

  খ

  0.2528

  গ

  0.5000

  ঘ

  0.5055
• On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes
  ক

  1

  খ

  8

  গ

  4

  ঘ

  2
• A gaseous mixture contains 14 kg of N₂, 16 kg of O₂ and 17 kg of NH₃. The mole fraction of oxygen is
  ক

  0.16

  খ

  0.33

  গ

  0.66

  ঘ

  0.47
• The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be
  ক

  10%

  খ

  5%

  গ

  18.18%

  ঘ

  20%
• A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is
  ক

  N₂O₄

  খ

  N₂O₅

  গ

  N₂O₃

  ঘ

  None of these