Question Pool Production of Metals

Production of Metals - SAMAGRA Question Pool & Answers | Class 10 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Chemistry Production of Metals

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Qn 1.

Copper is refined electrolytically.The reaction occuring at the two electrodes are given.

Electrode 1 : Cu →Cu2+ + 2e

Electrode 2 : Cu2+ + 2e →Cu

Write whether Electrode 1 is anode or cathode.

 



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Qn 2.

Metals like copper and silver are refined by using electrolytic method .

(a) Which is the anode used in refining of copper ?

(b) Write the equation of reaction occuring at anode and cathode during the refining of copper.

 



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Qn 3.

Which is the method used to refine tin?Why?

 



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Qn 4.

Different methods are used to convert the ores ZnCO3,Cu2S in to oxides.Write the appropriate methods to convert these ores.



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Qn 5.

Leaching is a process in aluminium production.To which of the following

class does it belong ?

(a) Concentration of ore

(b) Extraction of metal

(c) Refining of metal

(d) Alloying

 



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Qn 6.

(a) Which is the method used to concentrate copper pyrites?

(b) What property of the ore is utilised here ?

 



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Qn 7.

Which is an ore of iron ?

(Bauxite , Cryolite,Haematite ,Clay )

 



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Qn 8.

Which is not a basic metallurgical process ?

(a) Alloying

(b) Refining

(c) Concentration of ore

(d) Extraction of metal

 



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Qn 9.

The method used to prepare a metal from an ore is known as ..................... .



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Qn 10.

Minerals from which metals can be extracted easily are known as.................



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Qn 11.

Which is not a mineral of aluminium ?

( Bauxite, Cryolite , Sand, Clay )

 



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Qn 12.

Which among the following metals exists in the elemental state in nature?

(Magnesium , Sodium ,Gold ,Aluminium )

 



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Qn 13.

The main gangue in iron ore is SiO2

(a) Name the important ore of iron ?

(hamatite/ Bauxite/Calamine/Tinstone)

(b) Name the substances used to remove gangue from an ore ? Which is the substance used to remove SiO2 from iron ore?

 



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Qn 14.

The figure showing the electrolytic refining of copper is shown .

What are the anode,cathode and electrolyte of this cell ?

 



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Qn 15.

Figure of electrolysis of alumina is shown

 

(a) What are the anode and cathode ?

(b) Write the equation of cathode reaction.

(c) The anode blocks are to be replaced occasionally; Why?

 



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Qn 16.

The figure of electrolytic production of aluminium is given

(a)Name the process of production of aluminium ?

(b) What are the anode and cathode of the cell ?

(c) What is the role of cryolite in the electrolysis?

 



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Qn 17.

(a) Name the ore of aluminium ?

(b) Which is the method used to concentrate the ore of aluminium?

(c) Name the process used to produce aluminium ?

 



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Qn 18.

Names of some alloy steels are given in the box .

Alnico

Stainless steel

Nichrome

 

(a) What is the common component in all these steels ?

(b) Which steel is used to make heating coils?

(c) Which is the steel is used to make permanent magnets ?

(d) What is the similarity between stainless steel and nichrome ?

 



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Qn 19.

Equation of reaction occuring in blast furnace during the production of iron are given.

CaCO3 → CaO + CO2

Fe2O3 + 3 CO → 2 Fe + 3 CO2

CaO +SiO2 → CaSiO3

(a) Which of these represent slag formation reaction ?

(b) Which is the substance acting as reducing agent in blast furnace?

 



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Qn 20.

Iron produced in blast furnace

(a) Name the ore used here ?

(b) Why coke is added along with the ore to the blast furnace ?

(c) What is the role of limestone in blast furnace?

 



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Qn 21.

Ag , Fe, Sn, Na, Au

 

(a) Arrange the above metals in the decreasing order of their reactivity?

(b) Which metal is produced by reduction using electricity ?

(c) Which of the above occur free in nature ?

(d) Name the metal for which the compounds are highly stable ?

 



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Qn 22.

a)Complete the table.

Metal

Method of refining

Tin

(x)

Zinc

(y)

(a) identify x and y

(b) Which property of metals is made use of in the above process ?

 



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Qn 23.

Equation related with the concentration of two ores of Zn are given.

 

i. ZnCO3 + Heat ? ZnO + CO2

ii. ZnS +O2 + Heat ? ZnO + SO2

 

a .Which of these equation represent roasting?

b . How does roasting differ from calcination ?

 



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Qn 24.

Match suitably

Ore

Nature of the ore

The method of concentration

Copper pyrites

Density of the ore is heavier than gangue

Leaching

Magnetite

Ore and gangue do not dissolve in same solvent

Hydraulic washing

Ore of gold

Density of the ore is lighter than gangue

Magnetic separation

Bauxite

Magnetic natured ore

Froth floatation

 

  • Answer)

    Ore

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    Qn 25.

    Match the following

    Metal

    Ore

    Copper

    Bauxite

    Zinc

    Haematite

    Iron

    Calamine

    Aluminium

    Cuprite