English
Karnataka Board PUCPUC Science 2nd PUC Class 12

The mixture of compounds A and B is passed through a column of AlX2OX3 by using alcohol as eluant. Compound A is eluted in preference to compound B. Which of the compounds A or B, is more readil

Advertisements
Advertisements

Question

The mixture of compounds A and B is passed through a column of \[\ce{Al2O3}\] by using alcohol as eluant. Compound A is eluted in preference to compound B. Which of the compounds A or B, is more readily adsorbed on the column?

Short/Brief Note
Advertisements

Solution

Compound A doesn’t adsorb on the column well and moves down the column with alcohol (eluant), while compound B gets adsorbed well on the column and cannot move down.

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [Page 83]

APPEARS IN

NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 6 General Principle and Processes of Isolation of Elements
Multiple Choice Questions (Type - I) | Q 35 | Page 83

RELATED QUESTIONS

The reaction,

Cr2O3 + 2Al → Al2O3 + 2Cr

 (ΔGθ = -421kJ) is thermodynamically feasible as is apparent from the Gibbs energy value.  Why does it not take place at room temperature?


Is it true that under certain conditions, Mg can reduce SiO2 and Si can reduce MgO? What are those conditions?


Write down the reactions taking place in different zones in the blast furnace during the extraction of iron.


Write chemical reactions taking place in the extraction of zinc from zinc blende.


State the role of silica in the metallurgy of copper.


The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.


Write chemical reactions taking place in the extraction of copper from Cu2 S. 


How will you convert the following:
Zinc blende to Zinc metal


The impurity that is added externally to remove the impurity already present in the ore is known as ____________.


In the metallurgy of aluminium ______.


Below point ‘A’ \[\ce{FeO}\] can ______.


For the reduction of \[\ce{FeO}\] at the temperature corresponding to point D, which of the following statements is correct?


How is copper extracted from low grade copper ores?


Why is sulphide ore of copper heated in a furnace after mixing with silica?


Explain the following:

\[\ce{CO2}\] is a better reducing agent below 710 K whereas \[\ce{CO}\] is a better reducing agent above 710 K.


Explain the following:

Generally sulphide ores are converted into oxides before reduction.


Explain the following:

Carbon and hydrogen are not used as reducing agents at high temperatures.


A cuprous ore among the following is:-


Assertion: For the extraction of iron, haematite ore is used.

Reason: Haematite is a carbonate ore of iron.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×