1.

On increasing the binder content, what in the moulding sand gets reduced?(a) Hardenability(b) Strength(c) Permeability(d) Brittleness

Answer» Right option is (c) Permeability

Easiest explanation: On increasing the binder content, the hardenability does not get affected. The strength and the brittleness to do not change, but on addition of too much of binder in the moulding sand, the permeability of the moulding sand gets reduced.


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