Q JEE MAIN 2019

The correct statement regarding the given Ellingham diagram is

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The idea of froth floatation method came from a person X and this method is related to the process Y...

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Q JEE MAIN 2020

Cast iron is used for the manufacture of

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Q JEE MAIN 2019

The correct statement is

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Q JEE-MAIN 2019

In the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of

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Q JEE-MAIN 2019

In the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of

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Q JEE MAIN 2019

The correct statement regarding the given Ellingham diagram is

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Q JEE MAIN 2019

The pair that does NOT require calcination is

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Q JEE MAIN 2020

An Ellingham diagram provides information about

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Q JEE MAIN 2020

For a reaction, $$ 4 \mathrm{M}(\mathrm{~s})+\mathrm{nO}_2(\mathrm{~g}) \rightarrow 2 \mathrm{M}_2 \mathrm{O}_{\mathrm{n}}(\mathrm{~s}) $$ the free energy change is plotted as a function...

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Q JEE MAIN 2020

The incorrect statement is

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Q JEE MAIN 2020

According to the following diagram, A reduces $\mathrm{BO}_2$ when the temperature is

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Q JEE MAIN 2019

Match the ores (column A) with the metals (column B): \begin{tabular}{ll} \multicolumn{1}{c}{\begin{tabular}{c} (Column A) \\ Ores \end{tabular}} & \multicolumn{1}{c}{\begin{tabular}{l} (Column...

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Q JEE MAIN 2019

The correct statement is :

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Q JEE Main 2019

Hall-Heroult’s process is given by

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Q JEE MAIN 2020

Among statements (a) - (d), the correct ones are (a) Lime stone is decomposed to CaO during the extraction of...

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Q JEE MAIN 2019

The reaction that does NOT define calcination is:

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Q JEE MAIN 2020

The processes of calcination and roasting in metallurgical industries, respectively, can Iead to

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Q JEE MAIN 2019

Assertion : For the extraction of iron, haematite ore is used. Reason : Haematite is a carbonate ore of iron.

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Q JEE MAIN 2020

Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of...

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Q JEE MAIN 2019

The one that is not a carbonate ore is

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Q JEE MAIN 2020

The purest form of commercial iron is

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Q JEE MAIN 2021

In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud...

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Q JEE MAIN 2021

Given below are two statements. Statement I: The choice of reducing agents for metals extraction can be made by using...

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Q JEE MAIN 2019

The electrolytes usually used in the electroplating of gold and silver, respectively, are :

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Q JEE-MAIN 2021

Given below are two statements : Statement I : Sphalerite is a sulphide ore of zinc and copper glance is...

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Q JEE MAIN 2021

Which refining process is generally used in the purification of low melting metals ?

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Q JEE-MAIN 2021

Calamine and Malachite, respectively, are the ores of :

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Q JEE MAIN 2021

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2019

With respect to an ore, Ellingham diagram helps to predict the feasibility of its

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Q JEE MAIN 2021

In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH...

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Q JEE MAIN 2021

Consider two chemical reactions (A) and (B) that take place during metallurgical process : (A) $\mathrm{ZnCO}_{3(\mathrm{~s})} \xrightarrow{\Delta} \mathrm{ZnO}_{(\mathrm{s})}+\mathrm{CO}_{2(\mathrm{~g})}$ (B) $...

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Q JEE MAIN 2021

The statement that is INCORRECT about Ellingham diagram is

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Q JEE MAIN 2019

The Mond process is used for the :

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Q JEE MAIN 2021

Match list-I with list-II : Choose the most appropriate answer from the option given below :

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Q JEE-MAIN 2021

Match List-I and List-II :

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Q JEE MAIN 2021

Which of the following reduction reaction CANNOT be carried out with coke ?

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Q JEE MAIN 2021

Match List-I with List-II C hoose the correct answer from the options given below :

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Q JEE MAIN 2021

The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is...

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Q JEE MAIN 2021

The process that involves the removal of sulphur from the ores is :

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Q JEE MAIN 2021

$\mathrm{Al}_2 \mathrm{O}_3$ was leached with alkali to get $X$. The solution of $X$ on passing of gas $Y$, forms $...

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Q JEE MAIN 2021

Which of the following ore is concentrated using group 1 cyanide salt ?

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Q JEE MAIN 2022

The metal that is not extracted from its sulphide ore is :

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Q JEE MAIN 2022

Which of the following methods are not used to refine any metal? (A) Liquation (B) Calcination (C) Electrolysis (D) Leaching...

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Q JEE MAIN 2022

Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores...

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Q JEE MAIN 2022

Given below are two statements. Statement I : Pig iron is obtained by heating cast iron with scrap iron. Statement...

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Q JEE MAIN 2022

In liquation process used for tin (Sn), the metal :

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Q JEE MAIN 2022

Refining using liquation method is the most suitable for metals with :

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Q JEE MAIN 2022

Match List-I with List-II Choose the correct answer from the options given below.

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Q JEE MAIN 2023

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion...

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