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Matte smelting is used in the extraction of
Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns.
If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as
The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when