MEDIUM
JEE Main
IMPORTANT
Earn 100

In isolation of which one of the following metals from their ores, the use of cyanide salt is commonly not involved?
(a)Zinc
(b)Silver
(c)Gold
(d)Copper

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Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)
EASY
JEE Main
IMPORTANT
Match List with List .
List With Ore | List Composition |
A.Siderite | I. |
B.Malachite | II. |
C.Sphalerite | III. |
D.Calamine | IV. |
Choose the correct answer from the options given below:

MEDIUM
JEE Main
IMPORTANT
The compound(s) that is(are) removed as slag during the extraction of copper is :
(1)
(2)
(3)
(4)
(5)
Choose the correct answer from the options given below

MEDIUM
JEE Main
IMPORTANT
Given below are two statements.
Statement I : Pig iron is obtained by heating cast iron with scrap iron.
Statement II : Pig iron has a relatively lower carbon content than that of cast iron.
In the light of the above statements, choose the correct answer from the options given below.

EASY
JEE Main
IMPORTANT
Refining using liquation method is the most suitable for metals with

EASY
JEE Main
IMPORTANT
The metal that is not extracted from its sulphide ore is

EASY
JEE Main
IMPORTANT
Which of the following methods are not used to refine any metal?
(A) Liquation
(B) Calcination
(C) Electrolysis
(D) Leaching
(E) Distillation
Choose the correct answer from the options given below

HARD
JEE Main
IMPORTANT
Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores of iron is

MEDIUM
JEE Main
IMPORTANT
Which of the reaction is suitable for concentrating ore by leaching process?
