Question

name of the process of slow cooling of molten glass is a) smelting b) roasting c) slow cooling d) none give reason

Answer 1

c) slow cooling.
Reason:-A method of cooling molten glass, which comprises slowly cooling the molten glass while the average temperature of the molten glass is within a certain range extending below and above the temperature at which the speed of absorbing bubbles is highest, and cooling it rapidly when the average temperature of the molten glass is outside said range.