Which product of coal is used as a reducing agent in the extraction of metals?

Academic Chemistry NCERT Class 8

Coke is used as a reducing agent in the extraction of metals.

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Updated on: 10-Oct-2022

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Which of the following is used as a reducing agent in the extraction of iron metal?coalbitumencharcoalcoke
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using(a) Aluminium as reducing agent(b) Sodium as reducing agent (c) Carbon as reducing agent (d) Calcium as reducing agent
Which non-metals is used as a fuel?
(a) For the reduction of a metal oxide, suggest a reducing agent other than carbon.(b) Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
The extraction of metals from their ores and then refining them for use is known as ____________.
The material A is fossil fuel which is extracted from the earth. It is said to be formed from the buried, large land plants by a very slow process B. when A is heated in the absence of air in a process called C, then it gives three products D, E and F. The product D is used as a reducing agent in the extraction of metals, the product E is used as an industrial fuel whereas the product F has been traditionally used for metallic the roads.(a) What could material A be?(b) What is (i) physical state, and (ii) colour, of A?(c) Name the processes (i) B, and (ii) C.(d) What are (i) D, (ii) E, and (iii) F?
Name the product of coal which is thick black liquid having an unpleasant smell.
Which one of the methods given in column I is applied for the extraction of each of the metals given in column II:
In extraction of copper, the flux used isFeOSiO2CaOFeSiO3
Which substance is used for metalling the roads these days in place of coal tar?
Which component of biogas is used as a fuel?
In one of the industrial processes used for the manufacture of sodium hydroxide, a gas X is formed as a by-product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in the chemical industry. Identify X and Y, giving the chemical equation of the reactions involved.
A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.(a) Name the metal X. (b) Name the metal oxide XO2. (c) Which reducing agent can be used to reduce XO2 to obtain metal X?(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.

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