Match List-I and List-II : List-I List-II a Haematite i Al 2 O 3 · xH 2 O b Bauxite ii Fe 2 O 3 c Magnetite iii CuCO 3 · Cu ( OH ) 2 d Malachite iv Fe 3 O 4 Choose the correct answer from the options given below :

( a ) - ( ii ) , ( b ) - ( i ) , ( c ) - ( iv ) , ( d ) - ( iii )

( a )-( ii ), ( b )-( iii ),( c )-( i ),( d )-( iv )

( a )-( iv ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii )

( a )-( i ), ( b )-( iii ), ( c )-( ii ), ( d )-( iv )

Match List- I with List- II . List- I List- II (a) Siderite (i) Cu (b) Calamine (ii) Ca (c) Malachite (iii) Fe (d) Cryolite (iv) Al (v) Zn Choose the correct answer from the options given below:

a → iii , b → v , c → i , d → iv

a → iii , b → i , c → v , d → ii

a → i , b → ii , c → v , d → iii

a → i , b → ii , c → iii , d → iv

Match List- I with List- II . List- I (Ore) List- II (Element Present) a Kernite p Tin b Cassiterite q Boron c Calamine r Fluorine d Cryolite s Zinc Choose the most appropriate answer from the options given below:

a → q , b → p , c → s , d → r

a → r , b → p , c → q , d → s

a → q , b → s , c → p , d → r

a → p , b → r , c → s , d → q

Match List - I with List - II. List-I (Metal) List-II (Ores) (a) Aluminium (i) Siderite (b) Iron (ii) Calamine (c) Copper (iii) Kaolinite (d) Zinc (iv) Malachite Choose the correct answer from the options given below:

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

EASY

Earn 100

Total number of ores ,which can be best concentrated by the froth floatation method from the following ores are -

Galena, limonite, siderite, zincite, zinc blende, calamine, copper pyrites

50% studentsanswered this correctly

Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Oxidation state of copper is

+ 1

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Assertion: For the extraction of iron, haematite ore is used.
Reason: Haematite is a carbonate ore of iron.

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Which of the following is not an oxide ore?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Identify the correct set of sulphide ores from the following

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Sulphide ores are common for the metals:

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Malachite is an ore of

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

The one that is not a carbonate ore is:

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Match List-I and List-II :

	List-I		List-II
a	Haematite	i	${Al}_{2} O_{3} \cdot {xH}_{2} O$
b	Bauxite	ii	${Fe}_{2} O_{3}$
c	Magnetite	iii	${CuCO}_{3} \cdot Cu (OH)_{2}$
d	Malachite	iv	${Fe}_{3} O_{4}$

Choose the correct answer from the options given below :

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Which one of the following ores is known as Malachite:

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

The ore that contains the metal in the form of fluoride is known as which of the following?

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Match List- $I$ with List- $II$ .

List- $I$		List- $II$
(a)	Siderite	(i)	$Cu$
(b)	Calamine	(ii)	$Ca$
(c)	Malachite	(iii)	$Fe$
(d)	Cryolite	(iv)	$Al$
		(v)	$Zn$

Choose the correct answer from the options given below:

MEDIUM

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

"Metals are usually not found as nitrates in their ores".

Out of the following two (a and b) reasons which is or are true for the above observation?

(a) Metal nitrates are highly unstable.

(b) Metal nitrates are highly soluble in water.

EASY

Chemistry>Inorganic Chemistry>General Principles and Processes of Isolation of Metals (Metallurgy)>Occurrence of Elements in Nature

Match List- $I$ with List- $II$ .