Match List - I with List - II. List - I (Ore) List - II (Element Present) (a) Kernite (i) Tin (b) Cassiterite (ii) Boron (c) Calamine (iii) Fluorine (d) Cryolite (iv) Zinc Choose the most appropriate answer from the options given below :

Match List - I with List - II. List - I List - II (a) Sodium Carbonate (i) Deacon (b) Titanium (ii) Castner-Kellner (c) Chlorine (iii) van-Arkel (d) Sodium hydroxide (iv) Solvay Choose the correct answer from the options given below :

Match List - I with List - II. List - I List - II (a) Siderite (i) Cu (b) Calamine (ii) Ca (c) Malachite (iii) Fe (d) Cryolite (iv) Al (v) Zn Choose the correct answer from the options given below :

Calgon is used for water treatment. Which of the following statement is NOT true about Calgon?

The process that involves the removal of sulphur from the ores is :

Which of the following reduction reaction CANNOT be carried out with coke?

The point of intersection and sudden increase in the slope, in the diagram given below, respectively, indicates :

Match List - I with List - II : List - I List - II (a) Haematite (i) $$A{l}_2{O}_3.x{H}_{2}O$$ (b) Bauxite (ii) $$F{e}_2{O}_3$$ (c) Magnetite (iii) $$CuC{O}_3.Cu(OH{)}_2$$ (d) Malachite (iv) $$F{e}_3{O}_4$$ Choose the correct answer from the options given below :

The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is :

Match List - I with List - II : List - I List - II (a) Mercury (i) Vapour phase refining (b) Copper (ii) Distillation refining (c) Silicon (iii) Electrolytic refining (d) Nickel (iv) Zone refining Choose the most appropriate answer from the option given below :

The metal that can be purified economically by fractional distillation method is :

Consider two chemical reactions (A) and (B) that take place during metallurgical process: (A) $$ZnC{O}_{3(s)}\text{buildrel}\Delta \frac{⟶}{Z}n{O}_{(s)}+C{O}_{2(g)}$$ (B) $$2Zn{S}_{(s)}+3O_{2(g)}\text{buildrel}\Delta \frac{⟶}{2}Zn{O}_{(s)}+2S{O}_{2(g)}$$ The correct option of names given to them respectively is :

Sulphide ion is soft base and its ores are common for metals. (a) Pb (b) Al (c) Ag (d) Mg

In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :

Match List I with List II : (Both having metallurgical terms) .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List - I List - II (a) Concentration of Ag ore (i) Reverberatory furnace (b) Blast furnace (ii) Pig iron (c) Blister copper (iii) Leaching with dilute NaCN solution (d) Froth floatation method (iv) Sulfide ores Choose the correct answer from the options given below :

The statement is incorrect about Ellingham diagram is

Which one of the following set of elements can be detected using sodium fusion extract?

The addition of silica during the extraction of copper from its sulphide ore :-

Given below are two statements : Statement I : The choice of reducing agents for metals extraction can be made by using Ellingham diagram, a plot of $$\Delta$$G vs temperature. Statement II : The value of $$\Delta$$S increases from left to right in Ellingham diagram. In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : Statement I : Sphalerite is a sulphide or of zinc and copper glance is a sulphide ore of copper. Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a forth flotation method. Choose the most appropriate answer from the options given below :