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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 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 - Chemistry

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प्रश्न

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?

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उत्तर

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.

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पाठ 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [पृष्ठ ८३]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 6 General Principle and Processes of Isolation of Elements
Multiple Choice Questions (Type - I) | Q 35 | पृष्ठ ८३

संबंधित प्रश्‍न

How is ‘cast iron’ different from ‘pig iron’?


Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?


State the role of silica in the metallurgy of copper.


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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 ______.


Choose the correct option of temperature at which carbon reduces \[\ce{FeO}\] to iron and produces \[\ce{CO}\].


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


For the metallurgical process of which of the ores calcined ore can be reduced by carbon?

(i) Haematite

(ii) Calamine

(iii) Iron pyrites

(iv) Sphalerite


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How is copper extracted from low grade copper ores?


The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.


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:

Silica is added to the sulphide ore of copper in the reverberatory furnace.


Heating of MgCl2 6H2O in absence of HCl gives ______.


\[\ce{Au + CN^- + H2O + O2 -> [Au(CN)2]^- + OH^-}\]

The number of CN ions involved in the balanced equation is ______.


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