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The correct statement(s) related to the ...

The correct statement(s) related to the metal extraction processes is(are)

A

A mixture of PbS and PbO undergoes self-reduction to produce Pb and `SO_2`

B

In the extraction process of copper from copper pyrites, silica is added to produce copper silicate

C

Partial oxidation of sulphide ore of copper by roasting, followed by self-reduction produces blister copper

D

In cyanide process, Zinc powder is utilized to precipitate gold from `Na[Au(CN)_2]`

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JEE ADVANCED PREVIOUS YEAR-JEE ADVANCED 2021-QUESTION
  1. The correct statement(s) related to colloids is(are)

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  2. An ideal gas undergoes a reversible isothermal expansion from state I ...

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  3. The correct statement(s) related to the metal extraction processes is(...

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  4. A mixture of two salts is used to prepare a solution S, which gives th...

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  5. The maximum number of possible isomers(including stereoisomers) which ...

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  6. In the reaction given below, the total number of atoms having sp^2 hyb...

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  7. The total number of possible isomers for [Pt(NH3)4Cl2]Br2 is ---------...

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  8. The reaction sequence(s) that would lead to o-xylene as the major prod...

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  9. Correct option(s) for the following sequence of reactions is(are)

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  10. For the following reaction 2X+Y overset(K)rarrP the rate of reacti...

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  11. Some standard electrode potentials at 298K are given below: To a ...

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  12. The pair(s) of complexes where in both exhibit tetrahedral geometry is...

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  13. The correct statement(s) related to oxoacids of phosphorous is(are)

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  14. At 298K, the limiting molar conductivity of a weak monobasic acid is 4...

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  15. At 298K, the limiting molar conductivity of a weak monobasic acid is 4...

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  16. Reaction of xg of Sn with HCl quantitatively produced a salt. Entire a...

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  17. Reaction of xg of Sn with HCl quantitatively produced a salt. Entire a...

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  18. A sample (5.6g) containing iron is completely dissolved in cold dilute...

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  19. A sample (5.6g) containing iron is completely dissolved in cold dilute...

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  20. The amount of energy required to break a bond is same as the amount of...

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