Iron Production Mid - I, September - 2014

1.The chemical composition of Chalybite is_____
  • Iron oxide
  • Iron carbonate
  • Iron sulphide
  • Iron hydroxide
Answer: B
2.The product of COREX process is _______
  • Pure Iron
  • Pig iron
  • Foundry grade iron
  • Wrought iron
Answer: C
3.The reducer in the modern blast furnace is _______
  • Coal
  • Coke
  • Charcoal
  • Semi coke
Answer: C
4.Pellets are the product of _________
  • Concentration
  • Roasting
  • Reduction
  • Agglomeration
Answer: D
5.Green pellets are produced in __________
  • Disc pelletiser
  • Rotary kiln
  • Shaft grate
  • D.L machine
Answer: A
6.Coarse cleaning of Blast Furnace gas is done in _________
  • Electro Static Precipitator
  • Filter bags
  • Dust catcher
  • Cyclones
Answer: C
7.The main function of BF throat is _________ of the charge.
  • Reduction
  • Drying
  • Melting
  • Charging
Answer: B
8.Pre heating of the air is done in the blast furnace _________
  • Stoves
  • Throat
  • Stack
  • hearth
Answer: A
9._________ has better reducibility.
  • Hematite
  • Magnetite
  • Wustite
  • Siderite
Answer: A
10.FeO content in the Blast Furnace slag is maximum _________ percent.
  • 25
  • 1
  • 5
  • 10
Answer: B
11.The product of HYL process ________________
Answer: Sponge iron
12.Carbon deposition reaction occurs in the ______________ region of the Blast Furnace.
Answer: Stack
13.The flux in the Blast Furnace is________________
Answer: Lime stone
14.Sintering of iron ores is done in _______________ machine.
Answer: Dwight Lloyd
15.The lining of the Blast Furnace hearth is of ________________bricks.
Answer: Carbon
16.In the evaporative cooling system water is passed at ______________°C
Answer: 100
17.The _____________ heat of the Blast Furnace gas is recovered in the stoves.
Answer: Potential
18.Most of the phosphorus input in the BF goes into the _____________
Answer: Metal/pig iron
19.Desulphurisation is favoured at _______________ basicity of the slag.
Answer: High
20.Bourdard equilibrium reaction is ________________
Answer: C + CO2 <-> 2 CO