In case of a super-cooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is

Related MCQs

• 200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 × 10-3 kg/m2 .s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m2 /1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid).
• The driving potential for the crystal growth during crystallisation is the __________ of the solution.
• Crystallisation of solids from a homogeneous solution is a/an __________ process.
• During crystallisation, formation of crystal can occur in __________ solution only.
• It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is
• Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place
• The coefficient of linear expansion of a solid is L. The volume V of a cube of this solid on being heated by 1?C will change by
• The rate of heat flow between a solid wall and a fluid (in contact with a solid wall) is given by
• The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as
• A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case,