Aluminium is obtained by the electrolysis of pure of `Al_(2)O_(3)` dissolved in

Aluminium is obtained by the electrolysis of pure of `Al_(2)O_(3)` dissolved in
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Aluminium is obtained by the electrolysis of pure of `Al_(2)O_(3)` dissolved in A. Alumina B. Bauxite C. Cryolite D. Felspar
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The major role of flourspar, `CaF_(2)` which is added in small amount in the electrolytic reduction of `Al_(2)O_(3)` dissolved on fused cryolite in fu

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The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by (A) Electrolysis (B) Electrolytic reduction (C) Electrolytic oxidation (D) None of these

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Statement -1 In the electltic reduction of `Al_(2)O_(3)`cryolite is used . Statement -2: Cryolite si an ore of aluminium

Description : Statement -1 In the electltic reduction of `Al_(2)O_(3)`cryolite is used . Statement -2: Cryolite si an ore of aluminium

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Which of the following statement is incorrect ? a)Oxide of aluminium `(Al_(2)O_(3))` and arsenic `(As_(2)O_(3))` are amphoteric. b)Oxide of chlorine `

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In the extraction of aluminium by Hall-Heroult process purified `Al_(2)O_(3)` is mixed with `CaF_(2)` to

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(A) Reduction of `Cr_(2)O)(3)` with the Aluminium is possible ( R ) `DeltaG_((f))^(0) of Cr_(3)O_(3) " is -540kj//mole and" DeltaG_((f))^(0) ` `of Al_

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How many of the following liberate `O_(2)` on heating in a dry test tube ? `CaO, Fe_(2)O_(3), Fe_(3)O_(4), FeO, Cr_(2)O_(3), XeF_(4), Al_(2)O_(3), MgO

Description : How many of the following liberate `O_(2)` on heating in a dry test tube ? `CaO, Fe_(2)O_(3), Fe_(3)O_(4), FeO, Cr_(2)O_(3), XeF_(4), Al_(2)O_(3), MgO

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P is an alcohl which on heating with `Al_(2)O_(3)` forms an alkene Q.Q on ozonolysis produces R and S. When the mixture of R and S is heated with NaOH

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P is an alcohl which on heating with `Al_(2)O_(3)` forms an alkene Q.Q on ozonolysis produces R and S. When the mixture of R and S is heated with NaOH

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P is an alcohl which on heating with `Al_(2)O_(3)` forms an alkene Q.Q on ozonolysis produces R and S. When the mixture of R and S is heated with NaOH

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Electrolytic reducation of `Al_(2)O_(3)` Electrolyte `(Al_(2)O_(3)+cryolite)` Cathode : fraphite inside Fe -Container Coke power is spreased over the

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Electrolytic reducation of `Al_(2)O_(3)` Electrolyte `(Al_(2)O_(3)+cryolite) ` Cathode : fraphite inside Fe -Container The purpose of adding cryolite

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Electrolytic reducation of `Al_(2)O_(3)` Electrolyte `(Al_(2)O_(3)+cryolite)` Cathode : fraphite inside Fe -Container Pick out the statement which is

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Statement -1 `Al_(2)O_(3)` is converted in to Al by reductin with carbon at high temp.statement -2: Carbon has grater affinity for oxygen than alumium

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The most abundant ore of Al, called bauxite ore has the cheimal compositon `Al_(2)O_(3). xH_(2)O`. The x is

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Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. Coke powder is spreadded over the molten electro

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Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. The purpose of adding crylite is :

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Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. What is wrong if anode is made of nickel instant

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Bauxide ore is made up of `Al_(2)O_(3) + SiO_(2) + TiO_(2) + Fe_(2) O_(3)`. This ore is treated with conc. `NaOH` solution at `500 K` and `35` bar pre

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(A) The reduction reaction, `Cr_(2)O_(3)+2Al to Al_(2)O_(3)+2Cr, DeltaG^(0)=-421KJ` is not possible at room temperature (R ) Certain amount of activat

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Match the following `{:("List I","ListII"),("(A) Feldspar",(I) [Ag_(3)SbS_(3)]),("(B) Asbestors",(II) Al_(2)O_(3)H_(2)O),("(C) Pyrargyrite",(III) MgSO

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The value of n in the molecular formula `Be_(n)Al_(2)Si_(6)O_(18)` is:

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`BeO,Al_(2)O_(3),SnO_(2),SiO_(2),Sb_(2)O_(3),PbO` are __ oxides

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Name the process used to obtain Aluminum by electrolysis of aluminum oxide dissolved in molten cryolite?

Description : Name the process used to obtain Aluminum by electrolysis of aluminum oxide dissolved in molten cryolite?

Last Answer : ANSWER: HALL PROCESS

Aluminium is extracted in the electrolysis of :

Description : Aluminium is extracted in the electrolysis of :

Last Answer : Aluminium is extracted in the electrolysis of : A. Alumina B. Bauxite C. Molten cryolite D. Alumina mixed with molten cryolite

Aluminium is extracted from bauxite (a) By reduction with carbon (b) By reduction with Mg (c) By reduction with CO (d) By electrolysis in molten cryolite

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Last Answer : Ans:(d)

36. Aluminium is extracted from alumina (Al2O3 ) by electrolysis of a molten mixture of : (1) Al2O3 + KF + Na3AlF6 (2) Al2O3 + HF + NaAlF4 (3) Al2O3 + CaF2 + NaAlF4 (4) Al2O3 + Na3AlF6 + CaF2

Description : 36. Aluminium is extracted from alumina (Al2O3 ) by electrolysis of a molten mixture of : (1) Al2O3 + KF + Na3AlF6 (2) Al2O3 + HF + NaAlF4 (3) Al2O3 + CaF2 + NaAlF4 (4) Al2O3 + Na3AlF6 + CaF2

Last Answer : Al2O3 + Na3AlF6 + CaF2

Aluminium can be purified by (1) oxidation (2) distillation (3) electrolysis (4) ozonolysis

Description : Aluminium can be purified by (1) oxidation (2) distillation (3) electrolysis (4) ozonolysis

Last Answer : electrolysis

(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

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Water above the dissolved `O_(2)` content may be considered uncontaminated

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When `P_(4)O_(10)` is dissolved in water, the acid formed finally is :

Description : When `P_(4)O_(10)` is dissolved in water, the acid formed finally is :

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When `P_(4)O_(10)` is dissolved in water, the acid formed finally is :

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If `10g` of `V_(2)O_(5)` is dissolved in acid and is reduced to `V^(2+)` by zinc metal, how many mole `I_(2)` could be reduced by the resulting soluti

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A gas P is obtained at anode during the electrolysis of brine. The gas P when treated with excess of `NH_3` released a diatomic gas Q. Find the value

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Statement-1: Sodium chloride is added during electrolysis of fused anhdrous magnesium chloride. Statement-2: Anhydous magnesium chloride is obtained b

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The metal which cannot be obtained by electrolysis of aqueous solution of its salts is

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Good quality of edible salt is obtained from brine by the process of (A) Solar evaporation (B) Vacuum evaporation (C) Freeze drying (D) Electrolysis

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Which of the following metals can be obtained from its ore only by electrolysis of a molten salt ? w) cobalt x) chromium y) copper z) sodium

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What is the resulting concentration (in molL) of aqueous hydrochloric acid if 500 mL of its gaseous form at 300 K and 100 kPa will be dissolved in 100 mL pure water Use 8.314 kPaL(Kmol)?

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Pick out the wrong statement (A) Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance (B) In case of gas absorption, HETP is equal to HTU, when both the operating line & the equilibrium lines are parallel (C) Hatta number is important in case of gas absorption with chemical reaction (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process

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Co-current absorbers are usually used when the gas to be dissolved in the liquid is (A) Sparingly soluble (B) Highly soluble (C) A pure substance (D) A mixture

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When the gas to be dissolved in liquid is a/an __________ then normally co-current adsorber are used. (A) Mixture of two gases (B) Pure gas (C) Ideal gas (D) Sparingly soluble gas

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Specific weight of sea water is more that of pure water because it contains (A) Dissolved air (B) Dissolved salt (C) Suspended matter (D) All of the above

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When a solute is dissolved in a pure solvent, the resulting freezing point is: w) higher than pure solvent x) lower than pure solvent y) does not change z) cannot tell from this information

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Which one of the following statements is wrong? (a) Algae increase the level of dissolved oxygen in the immediate environment. (b) Algin is obtained from red algae, and carrageenan from brown algae. (c) Agar-agar is obtained from Gelidium and Gracilaria. (d) Laminaria and Sargassum are used as food.

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Among the electrolytes `Na_(2),SO_(4),CaCl_(2),Al_(2)(SO_(4))_(3) and NH_(4)Cl`, the most effective coagulating agent for `Sb_(2)S_(3)` sol is

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Find the valence factor for following salts : (i) `K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O " " (ii) CaCO_(3)`

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(1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium as fuel. The use of the relatively cheap ammonium nitrate and aluminium makes it a replacement for pure TNT. The mixture is affected by humidity because ammonium nitrate is highly hygroscopic. Ammonal is not easily detonated, requiring a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.

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Last Answer : Gelatin is mostly used in making icecreams in order to - (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma

Pick out the wrong statement. (A) Pure rubber is as useless as pure gold as a material of construction (B) Thermal conductivity of aluminium is higher than that of copper; henceit is increasingly used for utensil making(C) Copper has poor weldability(D) Reinforced plastics are made from both thermoplastic as well asthermosetting plastics

Description : Pick out the wrong statement. (A) Pure rubber is as useless as pure gold as a material of construction (B) Thermal conductivity of aluminium is higher than that of copper; henceit is ... has poor weldability (D) Reinforced plastics are made from both thermoplastic as well as thermosetting plastics

Last Answer : (B) Thermal conductivity of aluminium is higher than that of copper; henceit is increasingly used for utensil making