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Chemical Engineering :: Stoichiometry

  1. Which of the following expressions defines the Baume gravity scale for liquids heavier than water?

  2. A.

     (141.5/G) - 131.5

    B.

     145 - (145/G)

    C.

     200(G-1)

    D.

     (400/G) - 400

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  3. Which of the following gravity scales is used exclusively for liquids heavier than water?

  4. A.

     Baumme scale

    B.

     Twaddel scale

    C.

     API scale

    D.

     None of these

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

  6. A.

     °Be = (140/G) - 130

    B.

     °Be = 200(G-1)

    C.

     °Be = 145 - (145/G)

    D.

     °Be = (400/G) - 400

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  7. An azeotropic solution of two liquids has boiling point lower than either of them, when it

  8. A.

     Is saturated

    B.

     Is unsaturated

    C.

     Shows negative deviation from Raoult's law

    D.

     Shows positive deviation from Raoult's law

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  9. A chemical process is said to occur under unsteady state, if the

  10. A.

     Inventory changes do not take place

    B.

     Ratio of streams entering/leaving are independent of time

    C.

     Flow rates & composition both are time dependent

    D.

     None of these

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  11. In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B

  12. A.

     Exhibits positive deviation from Raoult's law

    B.

     Exhibits negative deviation from Raoult's law

    C.

     Obeys Raoult's law

    D.

     May exhibit either positive or negative deviation from Raoult's law

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  13. Number of gm moles of solute dissolved in one litre of a solution is called its

  14. A.

     Equivalent weight

    B.

     Molarity

    C.

     Molality

    D.

     Normality

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  15. 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

  16. A.

     Will be greater than 298 K

    B.

     Will be 298 K

    C.

     Will be less than 298 K

    D.

     Can not be determined

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  17. How many phases are present at eutectic point?

  18. A.

     1

    B.

     2

    C.

     3

    D.

     Unpredictable

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  19. The pressure of 'V' litres of a dry gas is increased from 1 to 2 kgf/cm² at a constant temperature. The new volume will become

  20. A.

     V/2

    B.

     2V

    C.

     V/4

    D.

     V²

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