Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination - roasting - leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon - out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer?

EduRev

All Courses

Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity

Open App

JEE Exam > JEE Questions > Minerals from which metals can be extracted e...

Join the Discussion on the App

Silver is extracted from its native ore by;

a)
Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.
b)
Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.
c)
Roasting followed by the self reduction.
d)
Roasting followed by electrolytic reduction.

Correct answer is option 'A'. Can you explain this answer?

FREE This question is part of

MET MCQ -1 (Advanced)

Attempt Test

Attempt this Test

Verified Answer

Minerals from which metals can be extracted economically and easily ar...

O₂ oxidases silver to silver (I) ion which then produces soluble complex with CN-ions.
2Ag + 4 NaCN + ½O₂ + H2O → 2Na [Ag (CN)²] +2 NaOH.
2Na[Ag (CN₂] + Zn⇔ Na₂ [Zn (CN)₄] + Ag

View all questions of this test

View all answers Start learning for free

< Previous Question Next Question >

Explore Courses for JEE exam

Similar JEE Doubts

Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (

View answer

Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (

View answer

Passage IIVariation of molar conductancewith molar concentration C is given following Debye-Huckel Onsager equation.With A and B asDebye-Huckelconstants andis the molar conductance of infinitely diluted( zero concentration) solution.Q.Following are some facts about electrolytic conduction :I. decreases with due to increase in interionic attraction between ions.II. For weak electrolytes, there is rapid increase in the degree of ionisation with dilution, hence, interionic attraction decreases and increases rapidly in lower concentration range.III. can be obtained by extrapolation of graph of to zero concentration for strong electrolytes.Correct facts are

View answer

A fuel cell is a cell that is continuously supplied with an oxidant and a reductant so that it can deliver a current indefinitely.Fuel cells offer the possibility of achieving high thermodynamic efficiency in the conversion of Gibbs energy into mechanical work. Internal combustion engines at best convert only the fraction (T2 T1)/T2 of the heat of combustion into mechanical work.While the thermodynamic efficiency of the fuel cell is given by, is theGibbs energy change for the cell reaction and H is the enthalpy change of the cell reaction.A hydrogen-oxygen fuel cell may have an acidic or alkaline electrolyte.Pt|H2(g)|H+(aq.)||H2O( l )|O2(g)|Pt; The above fuel cell is used to produce constant current supply under constant temperature 30 atm constant total pressure condition in a cylinder. If 10 moles H2 and 5 moles of O2 were taken initially. Rate of combustion of O2 is 10 milli moles per minute. The half cell reactions areTo maximize the power per unit mass of an electrochemical cell, the electronic and electrolytic resistances of the cell must be minimized. Since fused salts have lower electrolytic resistances than aqueous solutions, high-temperature electrochemical cells are of special interest for practical applications.Q.The above fuel cell is used completely as an electrolytic cell with Cu voltameter of resistance 26.94 W using Pt electrodes. Initially Cu voltameter contains 1 litre solution of 0.05M CuSO4.[H+] in solution after electrolysis (Assuming no change on volume of solution).

View answer

Consider the staternents S₁ and S2 S1: Conductivity always increases with decrease in the concentration of electrolyte.( d) HBrO(Ν.Ε.Ε.Τ., 2018)S_{2} : Molar conductivity always increases with decrease in the concentration of electrolyte.The correct option among the following is:(

View answer

Top Courses for JEEView all

Physics for JEE Main & Advanced

Mock Tests for JEE Main and Advanced 2025

Mathematics (Maths) for JEE Main & Advanced

Chemistry for JEE Main & Advanced

Chapter-wise Tests for JEE Main & Advanced

Top Courses for JEE

View all

Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer?

Share with a Friend

Answer this doubt

Question Description
Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer?.

Solutions for Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.

Here you can find the meaning of Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Minerals from which metals can be extracted economically and easily are called ores.The extraction of metals from their ores involves the following processes. (i) Concentration (ii) Calcination | roasting | leaching. (iii) Reduction.It is carried out by one of the following methods. (A) Carbon | out by one of the following methods (B) Self reduction. (C) Electrolytic reduction. (D) Reduction by more electropositive metal (i.e. displacement method).Q.Silver is extracted from its native ore by;a)Formation of soluble complex by dilute solution of NaCN in presence of air followed by the reduction with zinc.b)Formation of soluble complex by dilute solution of NaCN in absence of air followed by the reduction with zinc.c)Roasting followed by the self reduction.d)Roasting followed by electrolytic reduction.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice JEE tests.

Explore Courses for JEE exam