Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Consider the following statements regarding ores: i. Highly reactive metals are separated from their ores by electrolysis. ii. Metals of medium reactivity are separated from their ores by reduction. iii. Metals of least reactivity are separated from their ores by roasting
If k is the rate constant for a reaction and T is the absolute temperature in the given figure, the activation energy for the reaction is . . . . . . . . J/K mole.
Metallurgical Thermodynamics and Kinetics mcq question image
If 'Δx' represents adherent oxide layer thickness and 't' is time, which of the following curves represents diffusion controlled oxidation kinetics?
Metallurgical Thermodynamics and Kinetics mcq question image
Select the correct plot of Gibbs free energy (G) Vs. Temperature (T) for a single component system from the following:
Metallurgical Thermodynamics and Kinetics mcq question image
Roasting results in the formation of oxides. But why are oxide ores are subjected to roasting?
Volatilizing roasting is a type of roasting done to eliminate volatile oxides in the presence of excess oxygen.
Match the column:    Metal    Common method of extraction  (i)  Aluminium  (a)  Electrolysis of oxide dissolved in molten Cryolite  (ii)  Iron  (b)  Roasting followed by reduction with coke  (iii)  Copper  (c)  Roasting of sulphide partially and reduction  (iv)  Zinc  (d)  Reduction of the oxide with CO and coke in blast furnace
In which type of Roasting operation does the roasting and agglomeration processes take place simultaneously?
Rajasthan is almost a sole producer of which of the following minerals? (A) Lead and Zinc ores (B) Copper ores (C) Wollastonite (D) Selenite
Three friends A, B and C worked together to complete the work. A takes 4 days more to complete same work done by A and B. Work done by C in 4 days is equal to the work done by A in one day. Work done by B in 3 days is equal to the work done by C in 8 days. Find the time in which work will be completed if all three worked together.