Moulding sand which does not show any sign of softening - Manufacturing Processes - 1

Q.  The ability of the moulding sand to withstand the heat of melt without showing any sign of softening is called as
- Published on 03 Aug 15

a. strength or cohesiveness
b. refractiveness
c. collapsibility
d. adhesiveness

ANSWER: refractiveness

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    Discussion

  • Jithin Abraham Mathews   -Posted on 12 Dec 16
    The answer in itself is wrong. It should be refractoriness and not refractiveness. The latter is related to the phenomenon of light to bend as it passes from medium of different densities.
  • Pankaj   -Posted on 26 Oct 15
    - Refractiveness can be defined as the ability of moulding sand to withstand the heat of melt without showing any sign of softening.

    - As grain size of sand and its content increases, refractiveness also increases.

    - Refractiveness decreases with the increase in amount impurities and silt in sand.

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