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  • Question

  • If a solution of eutectic composition is cooled, __________ reaching the eutectic temperature.


  • Options
  • A. the solvent begins to freeze out even before
  • B. it will undergo no change until
  • C. it will not solidify even on
  • D. none of these

  • Correct Answer
  • it will undergo no change until 

    • Stoichiometry problems

    Search Results

    • 1. In a chemical process, the recycle stream is purged for

    • Options
    • A. increasing the product yield.
    • B. enriching the product.
    • C. limiting the inerts.
    • D. heat conservation.
      • Discuss
    • 2. At a temperature of 0°K, the molecules of a gas have only __________ energy.

    • Options
    • A. rotational
    • B. vibrational
    • C. translational
    • D. none of these
      • Discuss
    • 3. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

    • Options
    • A. nature of the liquid.
    • B. nature of the gas.
    • C. temperature of the liquid. id) total pressure.
      • Discuss
    • 4. 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.

    • Options
    • A. 0.5
    • B. 1
    • C. 1.5
    • D. 2
      • Discuss
    • 5. The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

    • Options
    • A. 2M
    • B. M/2
    • C. M
    • D. M/4
      • Discuss
    • 6. The equilibrium data of component A in the two phases B and C are given below.

      The estimate of Y for X = 4 by fitting a quadratic expression of a form Y = mX2 for the above data is

    • Options
    • A. 15.5
    • B. 16
    • C. 16.5
    • D. 17
      • Discuss
    • 7. Which of the following is not a unit of length?

    • Options
    • A. Parsec
    • B. Angstrom
    • C. Barn
    • D. Fermi
      • Discuss
    • 8. A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container

    • Options
    • A. will be greater than 298 K.
    • B. will be 298 K.
    • C. will be less than 298 K.
    • D. can not be determined.
      • Discuss
    • 9. Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is

    • Options
    • A. 20
    • B. 32.2
    • C. 45.35
    • D. 58.65
      • Discuss
    • 10. The total number of atoms in 8.5 gm of NH3 is __________ x 1023.

    • Options
    • A. 9.03
    • B. 3.01
    • C. 1.204
    • D. 6.02
      • Discuss

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