The reducing agent used in thermite process is ___________.<br/>1.

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Class 12 Chemistry Metallurgy General Principles and Processes of Isolation of Elements

The reducing agent used in thermite process is ___________.
1. Carbon
2. Aluminium
3. Iron
4. Sodium

(a)

Correct answer: (a)

Solution: Thermite process is very useful for the welding of broken metal parts. When Aluminum powder reacts with iron oxide or chromium oxide, a large amount of heat is released and about a temperature of

350 0^{0} C

is attained which is enough to weld broken metallic parts.

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general principles and processes of isolation of elements

metallurgical operations

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general principles and processes of isolation of elements

metallurgical operations

100 0^{o} C

Δ G^{\circ}

of the reaction is:

Z n O + C ⟶ Z n + C O

Which of the following sulphides when heated strongly in air gives the corresponding metal without undergoing separate reduction of oxide?

Carbon monoxide is naturally produced by oxidation of X , a gas present in swamp area while it can be produced by Y of fuels containing carbon.

Below point 'A' FeO can_____.

Chromium and manganese oxides are reduced to metals by using:

At what approximate temperature, zinc and carbon have equal affinity for oxygen?

Free energy change of Hg and Mg for the conversion to oxides the slope of

Δ G

vs. T has been changes above the boiling points of the given metal because -

Which is not a mineral of aluminium?

100 0^{o} C

Δ G^{\circ}