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  • Question

  • 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.

  • Correct Answer
  • will be less than 298 K. 

    • Stoichiometry problems

    Search Results

    • 1. Which of the following is not a unit of length?

    • Options
    • A. Parsec
    • B. Angstrom
    • C. Barn
    • D. Fermi
      • Discuss
    • 2. 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
    • 3. 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
      • Discuss
    • 4. 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
    • 5. 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
    • 6. 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
    • 7. 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
    • 8. Atmospheric pressure corresponds to a hydrostatic head of

    • Options
    • A. 13.6 cms of Hg
    • B. 34 ft ofH2O
    • C. 1 metre of H2O
    • D. 13.6 metres of Hg
      • Discuss
    • 9. In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

    • Options
    • A. increase
    • B. decrease
    • C. remain unchanged
    • D. none of these
      • Discuss
    • 10. The reaction A + B ? C has been conducted in a reactor as shown below.

      The number of balances (material) that can be made around the reactor are

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss

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