How many of the given metals can be obtained by carbon reduction in their extractive metallurgy

How many of the given metals can be obtained by carbon reduction in their extractive metallurgy
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How many of the given metals can be obtained by carbon reduction in their extractive metallurgy
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In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with coke is called

Description : In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with coke is called

Last Answer : In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with ... B. roasting C. calcination D. None of these

Which of the following process is used in the extractive metallurgy of magnesium ?

Description : Which of the following process is used in the extractive metallurgy of magnesium ?

Last Answer : Which of the following process is used in the extractive metallurgy of magnesium ? A. ... C. Aqqueos solution electrolysis D. Therminte reducation

Which of the following statement is incorrect about the extractive metallurgy of coper?

Description : Which of the following statement is incorrect about the extractive metallurgy of coper?

Last Answer : Which of the following statement is incorrect about the extractive metallurgy of coper? A. Matte ... Bessomer converter is called as blister copper.

Which of the following process is used in the extractive metallurgy of magnesium ?

Description : Which of the following process is used in the extractive metallurgy of magnesium ?

Last Answer : Which of the following process is used in the extractive metallurgy of magnesium ? A. ... C. Aqueous solution electrolysis D. Thermite reduction

Identify the correct statement with reference to the extractive metallurgy of aluminium. (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 (B) Approximately 80% of the aluminium deposited on the cathode comes from cryolite (C) Sodium is deposited along with aluminium, but is immediately vaporised (D) Anode effect sets in when the cryolite concentration goes below 40%.

Description : Identify the correct statement with reference to the extractive metallurgy of aluminium. (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 (B) Approximately 80% of ... is immediately vaporised (D) Anode effect sets in when the cryolite concentration goes below 40%.

Last Answer : (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3

Which of the following metals is NOT obtained by reduction using carbon? (1) Copper (2) Sodium (3) Iron (4) Zinc

Description : Which of the following metals is NOT obtained by reduction using carbon? (1) Copper (2) Sodium (3) Iron (4) Zinc

Last Answer : (2) Sodium Explanation: Metals such as zinc, iron and copper are present in ores as their oxides. Each of these oxides is heated with carbon to obtain the metal.

Essential oils are usually obtained using (A) Steam distillation (B) Extractive distillation (C) Solvent extraction (D) Leaching

Description : Essential oils are usually obtained using (A) Steam distillation (B) Extractive distillation (C) Solvent extraction (D) Leaching

Last Answer : (D) Leaching

Tin coating on metals is not done by (A) Spraying (B) Powder metallurgy (C) Hot dipping (D) Electro-deposition

Description : Tin coating on metals is not done by (A) Spraying (B) Powder metallurgy (C) Hot dipping (D) Electro-deposition

Last Answer : (B) Powder metallurgy

Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron metallurgy)?

Description : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron metallurgy)?

Last Answer : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron ... CO` D. `CO_(2)+C rarr 2CO`

Although thermodynamically feasible, in practice, Magnesium metal is not used for the reduction of Alumina in the metallurgy of aluminium.Why?

Description : Although thermodynamically feasible, in practice, Magnesium metal is not used for the reduction of Alumina in the metallurgy of aluminium.Why?

Last Answer : Ans. : Below the temperature(1623 K) correspoinding to the point of intersection of Al 2O3 and MgO curves in Ellingham diagram, Magnesium can reduce Alumina because the ΔfG o value of Al2O3 at ... to Al. But Magnesium is much costier metal than Aluminium and hence the process will be uneconomical.

How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Description : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Last Answer : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Highly electropositive metals can not be extracted by carbon reduction process because these :

Description : Highly electropositive metals can not be extracted by carbon reduction process because these :

Last Answer : Highly electropositive metals can not be extracted by carbon reduction process because these : A. Metals ... D. Loss of metal is more by vaporisation

Powder metallurgy technique is used in the production of __________ tools. (A) Tungsten carbide (B) High carbon steel (C) High speed steel (D) Drilling

Description : Powder metallurgy technique is used in the production of __________ tools. (A) Tungsten carbide (B) High carbon steel (C) High speed steel (D) Drilling

Last Answer : Option A

Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2:The sulphide ores of these metals react with their

Description : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2:The sulphide ores of these metals react with their

Last Answer : Statement-1: Auto reduction of ores is used for cinnabar, copper glance and Galena ores Statement-2: ... Statement-1 is false but Statement -2 is true

If a metal can be drawn into wires relatively easily it is called: (1) malleable (2) ductile (3) extractive (4) tactile

Description : If a metal can be drawn into wires relatively easily it is called: (1) malleable (2) ductile (3) extractive (4) tactile

Last Answer : (2) ductile Explanation: Ductility is a physical property of a material associated with the ability to be hammered thin or stretched into wire without breaking.

Solvent used in extractive distillation (A) Changes the relative volatility of the original components (B) Should be of high volatility (C) Should form azeotropes with the original components (D) All (A), (B) and (C)

Description : Solvent used in extractive distillation (A) Changes the relative volatility of the original components (B) Should be of high volatility (C) Should form azeotropes with the original components (D) All (A), (B) and (C)

Last Answer : (A) Changes the relative volatility of the original components

In extractive distillation, solvent is (A) Added to alter the relative volatility of the mixture (B) Of high volatility (C) Present in overhead stream (D) Of high viscosity to give high tray efficiency

Description : In extractive distillation, solvent is (A) Added to alter the relative volatility of the mixture (B) Of high volatility (C) Present in overhead stream (D) Of high viscosity to give high tray efficiency

Last Answer : (A) Added to alter the relative volatility of the mixture

Solvent used in extractive distillation (A) Is of low volatility (B) Forms a low boiling azeotrope (C) Forms a high boiling azeotrope (D) Does not alter the relative volatility of the original components

Description : Solvent used in extractive distillation (A) Is of low volatility (B) Forms a low boiling azeotrope (C) Forms a high boiling azeotrope (D) Does not alter the relative volatility of the original components

Last Answer : (B) Forms a low boiling azeotrope

Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation. (A) Molecular (B) Extractive (C) Steam (D) Simple

Description : Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation. (A) Molecular (B) Extractive (C) Steam (D) Simple

Last Answer : (D) Simple

Extraction of coffee from its seed is done by (A) Liquid-liquid extraction (B) Leaching (C) Extractive distillation (D) Steam distillation

Description : Extraction of coffee from its seed is done by (A) Liquid-liquid extraction (B) Leaching (C) Extractive distillation (D) Steam distillation

Last Answer : (B) Leaching

In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated. (A) Molecular (B) Azeotropic (C) Extractive

Description : In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated. (A) Molecular (B) Azeotropic (C) Extractive

Last Answer : (C) Extractive

Rose oil is extracted from rose leaves using __________ distillation. (A) High pressure (B) Low pressure (C) Extractive (D) Steam

Description : Rose oil is extracted from rose leaves using __________ distillation. (A) High pressure (B) Low pressure (C) Extractive (D) Steam

Last Answer : (D) Steam

ADDUCTS' and 'CLATHRATES' are used in case of (A) Extractive distillation (B) Crystallisation (C) Absorption (D) None of these

Description : ADDUCTS' and 'CLATHRATES' are used in case of (A) Extractive distillation (B) Crystallisation (C) Absorption (D) None of these

Last Answer : (B) Crystallisation

Pick out the correct statement. (A) Ponchan-Savarit method is more accurate than McCabe-Thiele method to determine the number of theoretical stages required for the separation of non￾ideal binary system by distillation (B) A sharp decrease in pressure drop is an indication of flooding in a distillation coloumn (C) Solvent used in extractive distillation should be of high volatility (D) Flash distillation is suitable for separating components which have very close boiling temperature

Description : Pick out the correct statement. (A) Ponchan-Savarit method is more accurate than McCabe-Thiele method to determine the number of theoretical stages required for the separation of ... Flash distillation is suitable for separating components which have very close boiling temperature

Last Answer : (A) Ponchan-Savarit method is more accurate than McCabe-Thiele method to determine the number of theoretical stages required for the separation of non￾ideal binary system by distillation

A binary mixture of benzene and cyclohexane is separated by (A) Flash vaporisation (B) Extractive distillation (C) Solvent extraction (D) Ordinary distillation

Description : A binary mixture of benzene and cyclohexane is separated by (A) Flash vaporisation (B) Extractive distillation (C) Solvent extraction (D) Ordinary distillation

Last Answer : (B) Extractive distillation

Alcohol is dehydrated using __________ distillation. (A) Extractive (B) Azeotropic (C) Steam (D) Molecular

Description : Alcohol is dehydrated using __________ distillation. (A) Extractive (B) Azeotropic (C) Steam (D) Molecular

Last Answer : (B) Azeotropic

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation? (A) Cost (B) Availability(C) Toxicity(D) Selectivity

Description : Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent ... ? (A) Cost (B) Availability (C) Toxicity (D) Selectivity

Last Answer : (D) Selectivity

Duhring's plot' is of use in (A) Extractive distillation (B) Evaporation

Description : Duhring's plot' is of use in (A) Extractive distillation (B) Evaporation

Last Answer : (B) Evaporation

Black liquor is converted into white liquor by (A) Evaporation and burning the concentrate followed by causticisation of products (B) Multi-effect evaporation only (C) Selective liquid extraction (D) Extractive distillation

Description : Black liquor is converted into white liquor by (A) Evaporation and burning the concentrate followed by causticisation of products (B) Multi-effect evaporation only (C) Selective liquid extraction (D) Extractive distillation

Last Answer : (A) Evaporation and burning the concentrate followed by causticisation of products

Glycerine is recovered from lye by (A) Evaporation followed by vacuum distillation (B) Liquid extraction technique (C) Extractive distillation technique (D) None of these

Description : Glycerine is recovered from lye by (A) Evaporation followed by vacuum distillation (B) Liquid extraction technique (C) Extractive distillation technique (D) None of these

Last Answer : (A) Evaporation followed by vacuum distillation

Penicillin is separated from fermented broth by (A) Extraction with amyl or butyl acetate (B) Ternary Azeotropic distillation (C) Evaporator in calandria (D) Extractive distillation

Description : Penicillin is separated from fermented broth by (A) Extraction with amyl or butyl acetate (B) Ternary Azeotropic distillation (C) Evaporator in calandria (D) Extractive distillation

Last Answer : (A) Extraction with amyl or butyl acetate

If a metal can be drawn into wires relatively easily it is called: w) malleable x) ductile y) extractive z) tactile

Description : If a metal can be drawn into wires relatively easily it is called: w) malleable x) ductile y) extractive z) tactile

Last Answer : ANSWER: X -- DUCTILE

For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

Description : For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

Last Answer : For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

Which of the following reduction reactions are actually employed in commercial extraction of metals ?

Description : Which of the following reduction reactions are actually employed in commercial extraction of metals ?

Last Answer : Which of the following reduction reactions are actually employed in commercial extraction of metals ? A. `Fe_(2 ... + 2CuO rarr 3Cu + SO_(2) uparrow `

Which of the following reduction reactions are actually employed in commercial extraction of metals?

Description : Which of the following reduction reactions are actually employed in commercial extraction of metals?

Last Answer : Which of the following reduction reactions are actually employed in commercial extraction of metals? A. `Fe_(2)O_(3 ... (2)S + 2CuO rarr 6Cu + SO_(2)`

In which of the following pair(s) the minerals are converted in to metals by self-reduction process?

Description : In which of the following pair(s) the minerals are converted in to metals by self-reduction process?

Last Answer : In which of the following pair(s) the minerals are converted in to metals by self-reduction process? A. `Cu_(2)S, ... `PbS, ZnS` D. `Ag_(2)S, Cu_(2)S`

Standard reduction potential of alkali metals have high negative values.

Description : Standard reduction potential of alkali metals have high negative values.

Last Answer : Explain : Standard reduction potential of alkali metals have high negative values.

Exposure to SO2 containing chimney gases results in the (A) Reduction in strength of leather & cloth (B) Acceleration of corrosion rates of metals (C) Increased drying & hardening time of paints (D) All (A), (B) and (C)

Description : Exposure to SO2 containing chimney gases results in the (A) Reduction in strength of leather & cloth (B) Acceleration of corrosion rates of metals (C) Increased drying & hardening time of paints (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

State general steps involved in metallurgy of a metal. -Science

Description : State general steps involved in metallurgy of a metal. -Science

Last Answer : The general steps of metallurgy are : Concentration of ore. Reduction of the metal compound. Refining of metal.

Explain the term ‘metallurgy’. -Science

Description : Explain the term ‘metallurgy’. -Science

Last Answer : Metallurgy is the science of extracting metals from their ores and purifying them for various uses.

evidence seems to suggest that the art of metallurgy began in _____. -General Knowledge

Description : evidence seems to suggest that the art of metallurgy began in _____. -General Knowledge

Last Answer : Evidence seems to suggest that the art of metallurgy began in Africa.

what are Metallurgy Service?

Description : what are Metallurgy Service?

Last Answer : Metals and alloys have been used extensively in personal appliances and industrial instruments due to their excellent mechanical property, as well as electrical and thermal conductivity. Among different types of ... For example, carbon steel which is also known as mild steel is useful for making

What are the properties of powder metallurgy ?

Description : What are the properties of powder metallurgy ?

Last Answer : The advantages of powder metallurgy are given below: All the products which cannot be made in any other way , can be made in this way. Products can also be made with a mixture of metallic ... case of mass production. Skilled workers are not needed. The product produced is very smooth and beautiful.

What is powder metallurgy ?

Description : What is powder metallurgy ?

Last Answer : The branch of metallurgy which deals with the preparation of metal powders and the use of specific heat and pressure from that powder to make human service utensils or desirable working materials and their properties is called powder metallurgy .

In the metallurgy of iron, when limestone is added to the blast furnace,the calcium ions end up in

Description : In the metallurgy of iron, when limestone is added to the blast furnace,the calcium ions end up in

Last Answer : In the metallurgy of iron, when limestone is added to the blast furnace,the calcium ions end up ... B. Gangue C. Metallic calcium D. Calcium Carbonate

ELECTROCHEMICAL PRINCIPLE OF METALLURGY

Description : ELECTROCHEMICAL PRINCIPLE OF METALLURGY

Last Answer : ELECTROCHEMICAL PRINCIPLE OF METALLURGY A. In simple electrolysis, the `M^(n^(+))` ions are ... +ve and the reaction would not be feasible.

In the metallurgy of aluminium,

Description : In the metallurgy of aluminium,

Last Answer : In the metallurgy of aluminium, A. graphite anode is oxidised to carbon monoxide and carbon ... in the overall reaction involved in the process

In the metallurgy of Fe, when `CaCo_(3)` is added to blast furnace, calcicum ion appears as

Description : In the metallurgy of Fe, when `CaCo_(3)` is added to blast furnace, calcicum ion appears as

Last Answer : In the metallurgy of Fe, when `CaCo_(3)` is added to blast furnace, calcicum ion appears as A. CaO B. metallic C. ggangue D. slag

Hydro metallurgy is used in the extraction of

Description : Hydro metallurgy is used in the extraction of

Last Answer : Hydro metallurgy is used in the extraction of A. Cu B. Au C. Ag D. All

What os mechanical metallurgy?

Description : What os mechanical metallurgy?

Last Answer : Need answer