English

Define leaching.

Advertisements
Advertisements

Questions

Define leaching.

Define the following term.

Leaching

Definition
Advertisements

Solution

Leaching is the process by which nutrients and soluble minerals are washed downward through the soil layers by heavy rainfall or excessive irrigation.

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Soils in India - Exercises [Page 133]

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Write the reactions involved in the zone of reduction in blast furnace during extraction of iron.


Silica is added to roasted copper ore during smelting process to remove _______.

(A) ferrous sulphide

(B) ferrous oxide

(C) cuprous sulphide

(D) cuprous oxide


Fe2O3 is reduced to spongy iron near the top of blast furance by

(A) H2

(B) CaO

(C) SiO2

(D) CO


Mention names and formulae of two ores of alumunium.


Draw neat and labelled diagram of Bessermer converter used in the extraction of copper.


Purification of aluminium by electrolytic refining is carried out by

(a)Hoope process

(b)Hall process

(c)Baeyer process

(d)Serperck process


What is the role of limestone in the extraction of iron from its oxides?


Indicate the principle behind the method used for the refining of zinc.


Which form of the iron is the purest form of commercial iron?


Describe the roles of the following: SiO2 in the extraction of copper from copper matte


Name the method used for refining of copper metal.


Explain the following methods to protect metals from corrosion:

Galvanization


Draw a neat, well labelled diagram of electrolytic cell for extraction of aluminium


What is 'copper matte' ?


What happens when a nickel rod is dipped into a copper sulphate solution? Justify your answer.

[\[\ce{E{^{\circ}_{Ni^{+2}/Ni}}}\] = − 0.25 V and \[\ce{E{^{\circ}_{Cu^{+2}/Cu}}}\] = +0.34 V]


How will you convert the following:
[Ag(CN)2]− to Ag


Bauxite has the composition


The most abundant metal on earth is:


Which of the following options are correct?

(i) Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.

(ii) In extraction of silver, silver is extracted as cationic complex.

(iii) Nickel is purified by zone refining.

(iv) Zr and Ti are purified by van Arkel method.


The main reactions occurring in blast furnace during extraction of iron from haematite are:

(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]

(ii) \[\ce{FeO + SiO2 -> FeSiO3}\] 

(iii) \[\ce{Fe2O3 + 3C -> 2Fe + 3CO}\]

(iv) \[\ce{CaO + SiO2 -> CaSiO3}\]


Write the chemical reactions involved in the extraction of gold by cyanide process. Also give the role of zinc in the extraction.


In the thermite process, the reducing agent is:


In the electrolytic process for the extraction of aluminium the electrolyte is:-


Extraction of zinc from zinc blende is achieved by:-


Native silver metal forms a water solution complex with dilute solution of Na CN in the presence of


Which of the following is not an ore of magnesiuim? 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×