Extraction of Iron
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Q.
Answer in brief.
Write a brief note on the three varieties of iron.
Q.
___________ is the purest form of iron and contains less than 0.1 percent of carbon.
Q.
The smelting of iron in a blast furnace involves the following process
Combustion
Reduction
Slag formation
Sublimation
Q. Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous and non-malleable.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) Name a non-metal is a good conductor of electricity.
(d) Name a non-metal which is known for its hardness.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) Name a non-metal is a good conductor of electricity.
(d) Name a non-metal which is known for its hardness.
Q.
………….. Iron contains less than 0.1 percent of carbon.
Q. Which of the following is purest form of iron?
- Steel
- None of these
- Wrought iron
- Pig iron
Q.
Name the following:
A form of iron that contains 2-4 percent carbon and is the most impure form of iron.
Q. Write down the formulae of aluminium chloride
Q. The metal which can be extracted from haematite ore
Q. Ca3(PO4)2 is:
- Thomas slag
- Formed in manufacturing of steel iron
- Used in manufacture of phosphorus fertilizer
- Used as a refractory material
Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->
Write a short note on charcoal. [5 Marks]