Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main202325 Jan 2023Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Given below are two statements:- Statement I:- In froth floatation method a rotating paddle agitates the mixture to drive air out of it. Statement II:- Iron pyrites are generally avoided for extraction of iron due to environmental reasons. In the light of the above statements, choose the correct answer from the options given below:-

Options

  1. ABoth Statement I and Statement II are true
  2. BStatement I is false but Statement II is true
  3. CStatement I is true but Statement II is false
  4. DBoth Statement I and Statement II are false

Correct answer

B. Statement I is false but Statement II is true

Step-by-step solution

The rotating paddle in the froth flotation process violently agitates the suspension of powdered ore in water, as well as the collectors and froth stabilisers, generating frothing. Iron pyrites are generally avoided for extraction of iron due to environmental reasons.

Practice General Principles and Processes of Isolation of Metals on Quantrex Academy →

More from General Principles and Processes of Isolation of Metals

Identify the incorrect pair from the following : 2024The correct statement(s) related to processes involved in the extraction of metals is(are) 2023Which one of the following is not an example of calcination? 2023Given below are two statements related to Ellingham diagram : Statement I : Ellingham diagrams can be constructed for formation of oxides, sulphides and halides of metals. Statemen 2023Which one of the following is most likely a mismatch? 2023Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: In the Ellingham diagram, a sharp change in slope of the line is o 2023Given below are two statements: Statement I: In the metallurgy process,sulphide ore is converted to oxide before reduction. Statement II: Oxide ores in general are easier to reduce 2023In the extraction process of copper, the product obtained after carrying out the reactions (i) 2 Cu 2 S + 3 O 2 ⟶ 2 Cu 2 O + 2 SO 2 (ii) 2 Cu 2 O + Cu 2 S ⟶ 6 Cu + SO 2023 Full General Principles and Processes of Isolation of Metals list All JEE Main PYQs