General Principles and Processes of Isolation of Elements — practice questions
70 curated practice questions from General Principles and Processes of Isolation of Elements (Chemistry JEE Advanced, NTA Exams) — 53 hard, 17 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- The chief reaction(s) occurring in blast furnace during extraction of iron from haematite is/are:
- Which of the following reactions show the process of smelting?
- In the cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents used are
- The carbon-based reduction method is not used for the extraction of
- Formation of metallic copper from the sulphide ore in the commercial metallurgical process involves.
- Assertion : Lead, tin and bismuth are purified by liquation method. Reason : Lead, tin and bismuth have low m.p. as…
- Which of the following processes is used in extractive metallurgy of magnesium ? (2002)
- Assertion : All the ores are mineral. Reason : Ores contains metals in combined state.
- For which of the following metal, the carbon reduction cannot be used?
- The anode mud in the electrolytic refining of silver contains:
- Which of the following metal (s) is/are commercially extracted by self reduction method from their corresponding ore?
- Which of the following metals are extracted from its ore by using self-reduction method?
- The smelting of iron in a blast furnace involves the following processes:
- The advantage (s) of using carbon to reduce a number of oxides and other compounds are:
- Upon heating with Cu 2 S, the reagent(s) that give copper metal is/are
- Assertion : Reduction of ZnO with carbon is done at 1100 o C Reason : G ^ is negative at this temperature thus, process…
- In the process of extraction of gold, Roasted gold ore + CN – + H 2 O O _ 2 [ X ] + OH – [ X ] + Zn → [ Y ] + Au…
- Which of the following pair consists of ore of the same metal?
- Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of…
- Which of the following is true for calcination of a metal ore?
- Extraction of copper from copper pyrite (CuFeS 2 ) involves (2016)
- Which of the following process is used in the extractive metallurgy of magnesium?
- Assertion : Al 2 O 3 is converted into Al by reduction with carbon at high temp. Reason : Carbon has greater affinity…
- The process (es) by which lighter earthy particles are freed from the heavier particles using water is/are:
- Which of the following steps is correctly related to different steps inovled in the extraction of Zn from Zinc blende?
- In the extraction of aluminium metal, one of the process is summarised as follows: array l ( array l Impure bauxite )…
- The correct statement(s) related to the metal extraction processes is(are) (2021)
- The cyanide process of gold extraction involves leaching out gold from its ore with CN – in the presence of Q in water…
- The electrochemical extraction of aluminum from bauxite ore involves
- Which among the following statement(s) is(are) true for the extraction of aluminium from bauxite?
- Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are)…
- Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?
- From which of the folowing reaction blister copper is obtained?
- Blister copper is refined by stirring molten impure metal with green logs of wood because such a wood liberates…
- Amphoteric nature of aluminium is employed in which of the following process for extraction of aluminium?
- The chemical process in the production of steel from haematite ore involve (2000)
- Calamine, malachite, magnetite and cryolite, respectively, are
- In the metallurgy of iron, when limestone is added to the blast furnace, the calcium ion ends up in
- Upon heating with Cu 2 S, the reagent(s) that give copper metal is/are (2014)
- Which of the following reduction reactions are actually employed in commercial extraction of metals?
- Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out (2000)
- Calamine, malachite, magnetite and cryolite, respectively, are (2019)
- The chemical treatment of the ore for concentration is done in the case of:
- Assertion : In the extraction of Ag, complex Na [Ag (CN) 2 ] is reacted with Zn. Reason : Zn is d-block transition…
- Consider the following metallurgical processes: (I) Heating impure metal with CO and distilling the resulting volatile…
- In the commercial electrochemical process for aluminium extraction the electrolyte used is
- Which of the following reaction in the blast furnace is/are endothermic?
- The chemical processes in the production of steel from haematite ore involve
- Assertion : In the electrolytic reduction of Al 2 O 3 , cryolite is used. Reason : Cryolite is an ore of aluminium.
- Highly electropositive metals can not be extracted by carbon reduction process because these:
- Which of the following reaction (s) occur during calcination?
- Assertion : In froth floatation process sodium ethyl xanthate is used as collector. Reason : Sulphide ores are water…
- Assertion : Cryolite is used in electrolytic extraction of Al from alumina. Reason : It helps in melting and…
- The major role of fluorspar (CaF 2 ), which is added in small quantities in the electrolytic reduction of alumina…
- The cyanide process of gold extraction involves leaching out gold from its ore with CN – in the presence of Q in water…
- Which one of the following metals can be extracted by aluminothermite process?
- The chemical composition of ‘slag’ formed during the smelting process in the extraction of copper is (2001)
- Extraction of copper from copper pyrite (CuFeS 2 ) involves
- Assertion : Wrought iron is more malleable and ductile than steel. Reason : Steel contains slightly less percentage of…
- Assertion : Thermite mixture Fe 2 O 3 + Al (powder) is used in the welding. Reason : Al is a good reductant.
- Which of the following processes is used in the extractive metallurgy of magnesium?
- In the electrolysis of alumina, cryolite is added to
- The methods chiefly used for the extraction of lead and tin from their ores are respectively (2004)
- In the process of extraction of gold, (2003) Roasted gold ore + CN – + H 2 O O _ 2 [X] + HO [X] + Zn [Y] + Au Identify…
- The function of adding cryolite in the electrolytic reduction of alumina by Hall-Heroult process is to :
- Which of the following reaction forms the basis of Goldschmidt alumino-thermite process?
- Assertion : Ores are generally converted into oxides, prior to reduction. Reason : Metal oxides can be easily reduced.
- Which of the following are true for electrolytic extraction of aluminium?
- Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out
- Assertion : CuFeS 2 is concentrated by froth floatation method. Reason : CuFeS 2 is main ore of copper.