BCA Family An online BCA community

Colleges

Triton International College

Location: Subidhanagar, Tinkune

Phone No: 123456790

Courses: BCA, BBA, BIM, BBS, BIT

Triton International College

Location: Subidhanagar, Tinkune

Phone No: 123456790

Courses: BCA, BBA, BIM, BBS, BIT

Web Hits Web Hits

Heavy Metal

Metal According to Reactivity

From Least to most reactive: Gold > Silver > copper > Iron > Zinc > Aluminum >Magnesium > Calcium > Sodium > Potassium

Abundant Element on Earth (Most to least)

Oxygen > Silicon > Aluminum > Iron > Calcium > Sodium > Magnesium > Potassium

Flux : It is a compound which is used in metallurgical process to extract gangue(unnecessary elements in ore) material during the extraction of element from ore. It must only react with gangue not with our element that we are extracting

Acidic flux are those flux which comes from substances like Lewis acid such as SiO2, H3PO4, HCl etc.

Basic fluxes like lime (CaO), magnesium oxide (MgO) are used to remove acidic gangue such as SiO2.

Slag : A Slag is by product form after extraction

Iron

Main ores of Iron
  • Haematite (Fe2O3) - Main Ore
  • Magnetite (Fe3O4)
  • Siderite (FeCO3)
  • Iron Pyrite (FeS2)
  • Limonite (2Fe2O3.3H2O)

Iron is never found in free state

Aluminum

  • Bauxite (Al2O3.2H2O) - Main Ore
  • Cryolite (Na3AlF6)
  • Corundum (Al2O3)

Zinc

  • sphalerite (Zinc Blende) - (ZnS) - Main Ore
  • Calamine - ZnCO3
  • Zincite (Zinc Oxide) - ZnO

Tin

  • Casseterite(Tin Stone) - SnO2

Silver

  • Argentite - Ag2S
  • Horn Silver - AgCl
  • Ruby Silver

Magnesium

  • Magnesite - MgCO3
  • Dolomite - MgCO3.CaCO3
  • Epsomite (Epsom Salt) - MgSO4.7H2

Copper

  • Copper Pyrites or Chalcopyrite (CuFeS2) or Cu2S.Fe2S3 Main Ore
  • Cuprite (Ruby Copper) Cu2O
  • Copper Glance - Cu2S

83. Malachite is an ore of[2075]

Fe

Zn

Cu

Hg

84. In the extraction of iron from hematite using blast furnace, iron oxide is reduced by [2075]

Silica

Coal

Limestone

CO

84. Hematite is an ore of [2075]

Sliver

iron

mercury

copper

89. Coating of Zn on iron for the prevention of rusting is known as [2075]

Surface coating

Electroplating

Shearding

Galvanizing

82. Down's process is used for the extraction of [2074]

Sodium

Sodium Hydroxide

Sodium Carbonate

None

93. Molecular formula of white vitrcol is [2074]

ZnSo4.7H2O

Zn(OH)2

ZnCO3

ZnO

94. Cinnabar is an ore of [2074]

Zinc

Copper

Mercury

Iron

99. The molecular formula of green vitrol is [2073]

FeCl3

FeSO4.7H2O

ZnSO4.7H2O

CuSO4.5H2O

100. Which is the most important ore of Zinc[2073]

Zincite

Zinc Blende

Framklinite

Wilemite

90. Chalcopyrite is an ore of [2072]

Fe

Cu

Zn

Hg

91. The substance used as flux in the extraction of iron from hamatite in blast furnace is [2072]

Calcium phosphate

Silica

Limestone

Calciu Silicate

91. Hematite is an ore of [2071]

Fe

Cu

Zn

Hg

87. Zinc Sulphate (ZnSO4.7H20) is also called [2070]

White Vitriol

Green Vitriol

Blue Vitriol

Corrosive Sublimate

88. Brass is an alloy of [2070]

Copper and Zinc

Copper and nickel

Copper and tin

Copper and lead

84. Hematite is an ore of [2069]

Sliver

iron

mercury

copper

84. The formula of Zinc blende is[2069]

ZnCO3

ZnS

ZnO

ZnO.Fe2O3

85. The oxidation state of iron in Mohr's salt is [2069]

+2

+3

+1

0

I there is