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General Principles and processes of Isolation of Elements
medium
Match List $I$ with List $II.$
List $I$ | List $II$ |
$A.$ Siderite | $I.$ $Fe CO _{3}$ |
$B.$ Malachite | $II.$ $CuCO _{3} \cdot Cu ( OH )_{2}$ |
$C.$ Sphalerite | $III.$ $ZnS$ |
$D.$ Calamine | $IV.$ $ZnCO _{3}$ |
Choose the correct answer from the options given below
A
$A-I, B-II, C-III, D-IV$
B
$A-III, B-IV, C-II, D-I$
C
$A-IV, B-III, C-I, D-II$
D
$A-I, B-II, C-IV, D-III$
(JEE MAIN-2022)
Solution
Siderite $- FeCO _{3}$
Malachite $- CuCO _{3} \cdot Cu ( OH )_{2}$
Calamine $- ZnCO _{3}$
Sphalerite $- ZnS$
Standard 12
Chemistry
Similar Questions
Match List $I$ and $II$ and select the correct answer using the codes given below the lists :
List $I$ | List $II$ |
$I.$ Cyanide process | $(1)$ Ultrapure $Ge$ |
$II.$ Floatation process | $(2)$ Dressing of $HgS$ |
$III.$ Electrolytic reduction | $(3)$ Extraction of $Al$ |
$IV.$ Zone refining | $(4)$ Extraction of $Au$ |
normal
Match Column $-I$ with Column $-II$
Column $-I$ | Column $-II$ |
$(P)$ Nitriding | $(I)$ Process of heating steel to redness and then cooling It very slowly |
$(Q)$ Annealing | $(II)$ Process of heating steel in presence of $NH_3$ and producing hard coating of Iron Nitride on the surface of steel |
$(R)$ Tempering | $(III)$ Process of heating steel to redness and then cooling it suddenly by plunging it into water or oil |
$(S)$ Quenching | $(IV)$ Process of heating quenched steel to a temperature well below redness and then cooling it slowly |
hard