Recent questions in General Principals and Processes of Isolation of Metals

The natural materials from which an element can be extracted economically are called

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In the commercial electrochemical process for aluminium extraction the electrolyte used is

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Cyanide process is used for the extraction of

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The Oxide of a metal (R) can be reduced by the metal (p) while metal (R) can reduce the oxide of metal (Q) Here the decreasing order of the reactivity of metal (P) and (Q) and (R) with oxygen

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In the alminothermite process, aluminium acts as :-

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Identify the reaction that does not take place in blast fumace.

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Which one of following reactions will occur on heating $AgNO_3$ above its melting point ?

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Composition of azurite mineral is

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Monel metal is an allay of

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Which of the following metal is extracted on smelting of are in blast furnance ?

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The Axles are made by heating rods of iron embedded in charcoal powder . This process is known as

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Wrought iron is

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Which method is based on distributive law?

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From gold auro cyanide $Na[Au(CN)_2]$ gold can be precipitated by adding powder of

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Oxygen is observed by molten $Ag$, Which is evolved on cooling and the silver particles are scattered; the phenomenon is known as

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Which of the following reactions is used to estimate Copper volumetrically ?

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The main function of roasting is

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The molten metal, obtained after the treatment of copper pyrites in the blast furnace, has the composition of

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The Ailoy of nictrome conatins

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Iron is not attacked by

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Iron reacts with $P_4O_{10}$ in the presence of $O_2$ at a high temp to produce.

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Which of the following statement is correct ?

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In the manufacture of iron from heamatite,limestone acts as a

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When hard steel is heated to bright redness and then allowed to cool slowly, it gets softened. The process is called

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Among the following, the maximum amount of carbon is present in

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In the extraction of iron $Fe_2O_3$ is reduced by

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In the manufacture of iron, the principal reaction in the zone of heat absorption of the blast furnace is

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The chemical process in the production of iron from haematite are involved

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Zinc reacts with very dilute nitric acid to produce.

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Golvanized iron pipes are made by 'hot dipping'

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Granulated zinc is made by

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The melting points of $Cu,Ag$ and $Au$ follow the order.

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Both flotation process may be used to increase the concentration of the mineral in

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For which of the following metals, hydrometal lagrical exceractive method may be emploved

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Iron is rendxred passive by treatment with concentrated

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Element carbon is most likely to reduce. $Fe_2O_3$ in which of the following temp ranges

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In the manufacture of iron from heamatile, lime stone acts as a

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In the electrolyte refing of silver the anode mud obtained contain

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Zinc reacts withvery dilute nilric acid to produce

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In extraction of iron $Fe_2O_3$ is reduced by

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The purest zinc is made

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The ares of $Ag$ and $Cu$ are concentrated using their solubility in

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Silver is refined by

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Among the following the maximum amount of carbon present in

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During the extraction of copper from chal copy rites,iron, Si moved as

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Bi semicopper is

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Copper is an unreactive metal and doesn’t react in normal circumstances with dilute acids. However it does react with nitric acid. Which of the following equations represent how Copper reacts with DILUTE nitric acid?

asked Mar 16, 2014 by balaji.thirumalai

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Which of the following is NOT correct?

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Given that metal oxides such as $Cr_2O_3$ and $Mn_3O_4$ cannot be reduced using Carbon or Carbon monoxide, which of the following must be true?

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Which of the following statements is TRUE?

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