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  • Question

  • Which of the following expressions defines the Baume gravity scale for liquids lighter than water?


  • Options
  • A. °Be = (140/G) - 130
  • B. °Be = 200(G-1)
  • C. °Be = 145 - (145/G)
  • D. °Be = (400/G) - 400

  • Correct Answer
  • °Be = (140/G) - 130 

    • Stoichiometry problems

    Search Results

    • 1. Pick out the wrong unit conversion of temperature.

    • Options
    • A. °R = 273 + °F
    • B. temperature difference of 1°K = 1°C = °F
    • C. °C = (F- 32) x 0.555
    • D. °F = (°C + 17.778) x 1.8
      • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. Which of the following is not used for computing latent heat of vaporisation?

    • Options
    • A. Clausius-Clayperon equation
    • B. Reference substance plots based on Durhing & Othmer plots
    • C. Kistyakowasky's equation
    • D. Hess's law of constant heat summation
      • Discuss
    • 7. Pick out the wrong statement.

    • Options
    • A. To make 100 kg of a solution containing 40% salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the amount of solution A required is 40 kg.
    • B. 1.2 gm atoms of carbon and 1.5 gm moles of oxygen are reacted to give 1 gm mole of carbon dioxide. The limiting reactant is carbon. The percent excess reactant supplied is 25.
    • C. A gas bubble at a pressure of Pg is passed through a solvent with a saturation vapour pressure of Ps. If the time of passage of the bubble is long and air is insoluble in the solvent, the mole fraction of solvent in the bubble will be equal to Ps/Pg.
    • D. A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility .of the solute is C1. The output rate of solids from an efficient crystalliser is (C + C1) V.
      • Discuss
    • 8. °API gravity of water at N.T.P. is about

    • Options
    • A. 0
    • B. 1
    • C. 10
    • D. 100
      • Discuss
    • 9. Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the

    • Options
    • A. recycling
    • B. purging
    • C. bypassing
    • D. recirculation
      • Discuss
    • 10. In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

    • Options
    • A. independent of the temperature.
    • B. increased with the increase in pressure.
    • C. decreased with the increase in pressure.
    • D. unchanged by the pressure change.
    • E. none of these
      • Discuss

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