EASY
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Calamine is an ore of:

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Important Questions on Transition and Inner Transition Elements

EASY
Assertion: For the extraction of iron, haematite ore is used.
Reason: Haematite is a carbonate ore of iron.
EASY
Identify the correct set of sulphide ores from the following
EASY

Match List-I and List-II :

  List-I   List-II
a Haematite i Al2O3·xH2O
b Bauxite ii Fe2O3
c Magnetite iii CuCO3·Cu(OH)2
d Malachite iv Fe3O4

Choose the correct answer from the options given below :

EASY
Which one of the following ores is known as Malachite:
EASY
The ore that contains the metal in the form of fluoride is known as which of the following?
EASY

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
"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

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:

EASY
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:

EASY
Which among the following is not a mineral of iron?