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Home ‣ Chemical Engineering ‣ Stoichiometry Comments
  • Question

  • For an ideal gas, the compressibility factor


  • Options
  • A. decreases with pressure rise.
  • B. is unity at all temperature.
  • C. is unity at Boyle's temperature.
  • D. zero.

  • Correct Answer
  • is unity at all temperature. 

    • Stoichiometry problems

    Search Results

    • 1. A 'limiting reactant' is the one, which decides the __________ in the chemical reacation.

    • Options
    • A. equilibrium constant
    • B. conversion
    • C. rate constant
    • D. none of these
      • Discuss
    • 2. __________ fuels require the maximum percentage of 'excess air' for complete combustion.

    • Options
    • A. Solid
    • B. Liquid
    • C. Gaseous
    • D. Nuclear
      • Discuss
    • 3. Pick out the wrong statement:

    • Options
    • A. Clausius-Clapeyron equation relates the latent heat of vaporisation to the slope of the vapor pressure curve.
    • B. At the boiling point of liquid at the prevailing total pressure, saturated absolute humidity is infinite.
    • C. Percentage saturation and relative saturation are numerically equal for an unsaturated vapor gas mixture.
    • D. Clapeyron equation is given by,; where, P = vapor pressure, T = absolute temperature, ? = latent heat of vaporisation, VG and VL = volumes of gas and liquid respectively.
      • Discuss
    • 4. Heat of neutralisation of HCl and NaOH is - 57.46 kJ/Kg mole. The heat of ionisation of water will be __________ kJ/Kg mole.

    • Options
    • A. 57.46
    • B. -57.46
    • C. 114.92
    • D. -28.73
      • Discuss
    • 5. Kopp's rule is useful for the determination of

    • Options
    • A. molal heat capacities of gases.
    • B. heat capacities of solids.
    • C. activation energy.
    • D. heat capacities of gases.
      • Discuss
    • 6. A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be

    • Options
    • A. 0°C
    • B. 0°K
    • C. -136.5°C
    • D. -136.5°K
      • Discuss
    • 7. In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure.

    • Options
    • A. kg of solute/kg of solvent
    • B. kg-mole of solute/kg-mole of solvent
    • C. kg-mole of solute/1000 kg of solvent
    • D. all (a), (b) & (c)
      • Discuss
    • 8. If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its

    • Options
    • A. bubble point.
    • B. saturation temperature.
    • C. dew point.
    • D. both (b) and (c).
      • Discuss
    • 9. Pick out the correct statement.

    • Options
    • A. A substance existing above its critical temperature is called a saturated vapor.
    • B. A mixture of vapor gas is called saturated, if the equilibrium vapor pressure of the liquid is more than the partial pressure of the vapor at the same temperature.
    • C. Heat added to or given up by a substance at constant temperature is called the sensible heat.
    • D. The end points of a vapor-pressure vs. temperature curve are critical and triple points.
      • Discuss
    • 10. Isotopes are atoms having the same

    • Options
    • A. mass number
    • B. number of neutrons
    • C. atomic mass
    • D. none of these
      • Discuss

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