Isolation of Elements JEE Main PYQs (2002–2023) with Solutions — Chemistry

Q01JEE Main 202116 Mar, Evening shiftEasyIsolation of Elements99× since 2002

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

Q01JEE Main 202116 Mar, Evening shiftEasyIsolation of Elements99× since 2002

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

Q02JEE Main 202118 Mar, Morning shiftEasyIsolation of Elements99× since 2002

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

Q03JEE Main 202127 Jul, Evening shiftEasyIsolation of Elements99× since 2002

Which one of the following set of elements can be detected using sodium fusion extract?

Q04JEE Main 202127 Jul, Evening shiftEasyIsolation of Elements99× since 2002

The addition of silica during the extraction of copper from its sulphide ore :-

Q05JEE Main 202118 Mar, Evening shiftEasyIsolation of Elements99× since 2002

Match List - I with List - II : List - I List - II (a) Mercury (i) Vapour phase refining (b) Copper (ii) Distillation refining (c) Silicon (iii) Electrolytic refining (d) Nickel (iv) Zone refining Choose the most appropriate answer from the option given below :

Q06JEE Main 201912 Apr, Morning shiftEasyIsolation of Elements99× since 2002

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

Q07JEE Main 202120 Jul, Evening shiftMediumIsolation of Elements99× since 2002

Consider two chemical reactions (A) and (B) that take place during metallurgical process: (A)

ZnC{O_{3(s)}}\buildrel \Delta \over \longrightarrow Zn{O_{(s)}} + C{O_{2(g)}}

(B)

2Zn{S_{(s)}} + 3{O_{2(g)}}\buildrel \Delta \over \longrightarrow 2Zn{O_{(s)}} + 2S{O_{2(g)}}

The correct option of names given to them respectively is :

Q08JEE Main 202125 Jul, Morning shiftEasyIsolation of Elements99× since 2002

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

Q09JEE Main 202125 Jul, Evening shiftHardIsolation of Elements99× since 2002

Match List I with List II : (Both having metallurgical terms) .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List - I List - II (a) Concentration of Ag ore (i) Reverberatory furnace (b) Blast furnace (ii) Pig iron (c) Blister copper (iii) Leaching with dilute NaCN solution (d) Froth floatation method (iv) Sulfide ores Choose the correct answer from the options given below :

Q10JEE Main 202228 Jul, Morning shiftEasyIsolation of Elements99× since 2002

Which of the reaction is suitable for concentrating ore by leaching process ?

Isolation of Elements

Questions per year

102 questions in the bank

All 102 Isolation of Elements questions by year

JEE Main 2023 20

Isolation of Elements

Questions per year

102 questions in the bank

All 102 Isolation of Elements questions by year

JEE Main 2023 20

JEE Main 2022 21

JEE Main 2021 30

JEE Main 2020 7

JEE Main 2019 14

JEE Main 2018 1

JEE Main 2016 2

JEE Main 2015 1

JEE Main 2012 1

JEE Main 2008 1

JEE Main 2005 1

JEE Main 2004 1

JEE Main 2002 2