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

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General Principles and processes of Isolation of Elements

easy

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

tempering

annealing

nitriding

case hardening

Solution

Railway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as case hardening.

The process of hardening the surface of wrought iron by depositing a surface layer of steel on it is called case-hardening. It is done by heating wrought iron in contact with potassium ferrocyanide. Alternatively, case hardening can also be done by heating wrought iron with charcoal and then plunging it a suitable oil.

Standard 12

Chemistry

Match the elements in Column $I$ with methods of purification in Column $II$.

Column – $I$ Column – $II$

$(a)$ Boron $(i)$ Van Arkel method

$(b)$ Tin $(ii)$ Mond's process

$(c)$ Zirconium $(iii)$ Liquation

$(d)$ Nickel $(iv)$ Zone refining

medium

(NEET-2020)

Give the correct order of initials $T$ or $F$ for following statements. Use $T$ if statement is true and $F$ if it is false.

$(i)$ In Gold schmidt thermite process aluminium acts as a reducing agent .

$(ii)$ $Mg$ is extracted by electrolysis of aq. solution of $MgCl_2$

$(iii)$ Extraction of $Pb$ is possible by carbon reduction method

$(iv)$ Red Bauxite is purified by Serpeck's process

normal

Carbon reduction process is not commerically applicable for which of the following set of oxides to extract the respective metal ?

$(I)\,\,\,\,\,ZnO\,\,\,\,\,(II)\,\,\,\,\, Fe_2O_3\,\,\,\,\, (III)\,\,\,\,\, Al_2O_3\,\,\,\,\,(IV)\,\,\,\,\,SnO_2\,\,\,\,\,(V)\,\,\,\,\,MgO$

medium

Froth floatation is based upon

easy

Which of the following statement is not correct

easy

Column – $I$	Column – $II$
$(a)$ Boron	$(i)$ Van Arkel method
$(b)$ Tin	$(ii)$ Mond's process
$(c)$ Zirconium	$(iii)$ Liquation
$(d)$ Nickel	$(iv)$ Zone refining

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

Solution

Similar Questions

Match the elements in Column $I$ with methods of purification in Column $II$. Column – $I$ Column – $II$ $(a)$ Boron $(i)$ Van Arkel method $(b)$ Tin $(ii)$ Mond's process $(c)$ Zirconium $(iii)$ Liquation $(d)$ Nickel $(iv)$ Zone refining

Carbon reduction process is not commerically applicable for which of the following set of oxides to extract the respective metal ? $(I)\,\,\,\,\,ZnO\,\,\,\,\,(II)\,\,\,\,\, Fe_2O_3\,\,\,\,\, (III)\,\,\,\,\, Al_2O_3\,\,\,\,\,(IV)\,\,\,\,\,SnO_2\,\,\,\,\,(V)\,\,\,\,\,MgO$

Froth floatation is based upon

Which of the following statement is not correct

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Match the elements in Column $I$ with methods of purification in Column $II$.

Column – $I$ Column – $II$

$(a)$ Boron $(i)$ Van Arkel method

$(b)$ Tin $(ii)$ Mond's process

$(c)$ Zirconium $(iii)$ Liquation

$(d)$ Nickel $(iv)$ Zone refining

Carbon reduction process is not commerically applicable for which of the following set of oxides to extract the respective metal ?

$(I)\,\,\,\,\,ZnO\,\,\,\,\,(II)\,\,\,\,\, Fe_2O_3\,\,\,\,\, (III)\,\,\,\,\, Al_2O_3\,\,\,\,\,(IV)\,\,\,\,\,SnO_2\,\,\,\,\,(V)\,\,\,\,\,MgO$